
Long to try your hand at building a pedal but can't help feeling overwhelmed? Let us enlighten you on the tools, materials, and available resources, as well as teach you how to build a critical, oft-overlooked testing device.
The DIY guitar-pedal world has been exploding over the past few years—so much so that it's likely at least a few of you have dipped a toe in already. I know I did. After using pedals for so many years and becoming pretty much obsessed with them, I felt a burning desire to learn what's going on inside these contraptions. But initially I was pretty intimidated. There is so much to learn! And even though we live in an age when all the information we need is practically at our fingertips, it's sometimes difficult to know how to word things in a search engine to get what we're looking for. Luckily, there's an immense DIY community out there, too—blogs, forums, and general-information reference sites. In my experience, just about everyone in the community is eager to help each other, so it didn't take long for me to feel welcome and encouraged.
Even so, two big things have become glaringly obvious to me during my years of pedal building. First, while there's a ton of information and lots of goodwill on the scene, there isn't really a single place that pulls together both the most important foundational concepts and a comprehensive list of the tools a novice needs to have not just a fun time, but a successful first building experience. No one likes spending a bunch of time and money on parts, tools, and assembly only to have a worthless hunk of junk that doesn't work at the end of it all.
Secondly, very few places mention one of the most important, helpful, and time- and wits-saving tools that a would-be pedal builder can have at their disposal. No matter how experienced you are, no matter what you're building, the simple fact is that if you don't have a circuit-tester box, you're probably losing a lot of time and getting way more frustrated than you need to during a pedal build.
What exactly is a circuit-tester? It's a special, prewired "dummy" pedal you can use over and over again to test any circuit you're working on. In other words, it will function as the vicarious housing for any DIY pedal project you're working on, allowing you to hear it and know that it works before you install the project in a housing with its own jacks, etc. To that end, I put together this brief tutorial for a DIY tester box. Besides being very useful for any future pedal projects you might undertake, the tester-building process itself will be great practice for upcoming pedal builds, too. Once you've mastered this, you'll be ready to move onto building your first pedal, whether it's a kit or a copy of a popular circuit.
Let's start with essential tools, since there are so many options on the market that might seem fine but actually aren't well suited to pedal-building tasks.
Essential Pedal-Building Tools
Soldering iron. You don't need the fanciest one around, but a cheapie can definitely make your projects a lot less fun. An iron of 40 or more watts will get the job done. And while you don't have to get one with a digital readout, it's a heck of a lot easier to use. Otherwise, you'd need to rig up a way to test your iron's temperature to ensure it stays at an appropriate, steady temperature for creating good solder joints. I solder at anywhere from 600 to 750 degrees, and I like the set-it-and-forget-it aspect of digital soldering irons. If the temperature drifts, the readout will reflect that fluctuation and readjust within seconds. I've tried about six different soldering irons, including an expensive Weller digital model. I keep going back to the Hakko FX-888D, but if you're not quite ready to plunk down a hundo on your iron, the Weller WLC100 40-Watt Soldering Station will work just fine, too.
Soldering tips. Soldering stations typically come with one soldering tip, usually a large one that's not very useful for pedal building. There are many sizes to choose from, but I tend to use two sizes mostly: a .8mm conical tip and, much less often, a .8mm chisel tip. In my experience, it is better to purchase original-equipment-manufacturer (OEM) brand soldering tips, as after-market tips often don't last long.
Solder. The type of solder typically used for this type of work has an activated rosin flux core and is composed of approximately 60 percent tin and 40 percent lead, although lead-free options are available. I have tried many kinds—lead-free, silver-bearing, no-clean, you name it. I've found lead-free solder incredibly difficult to work with, though perhaps I will find one that works for me in the future. Some folks like a bit thicker diameter of solder than the Kester .02"-diameter solder that I use. I find anything from .02" to .03" in diameter acceptable for pedal building. (Note: Even if you've been soldering for a while, I also recommend finding out more about it from a source such as ElectronicsAndYou.com. There's also a wonderful tutorial video by trusted electronics outfit Pace, Inc.)
Something to clean your iron. This is something you should be doing quite frequently! A moistened sponge works, while something like the handy Hakko 599B Tip Cleaner helps prevent solder blobs from flying in your face or hair.
Smoke absorber. Solder fumes are highly toxic, so a de-fuming fan/smoke absorber is essential—even if you're working in a well-ventilated room. I use a Hakko FA-400, but I still keep all shop windows open and use a ceiling fan to keep the air circulating out. Placing a soldering station right next to an open window with the de-fumer blowing the fume-y air out is the easiest way I have found to keep solder smoke from lingering.
Pliers. I use three different sets of pliers every time I build: a flat long-nose variety with no teeth, a skinny long-nose with no teeth, and flat long-nose pliers with teeth.
Wire cutters. For snipping wires and component leads. I tend to break wire cutter tips rather often, so I keep a few pairs around. I have a robust pair for cutting thick wires and metal, a pair of Xytronic AX103 Side Cutters for most everyday clipping work, as well as a fancy, sharp pair for more dainty work (like snipping leads off of PCBs).
Wire strippers. For trimming a small piece of each wire's outer coating (or "jacket") to expose the bare wire underneath. I like models like this Hanlong 20-30AWG stripper because they can strip a few different gauges of wire. "Self-adjusting" wire strippers like models from Irwin are also popular with some builders, though I find them a bit clunky to use. Note: When I'm not using wire salvaged from unused electronics, I prefer Teflon-coated wire because its outer jacket won't melt. One disadvantage, however, is that it's slippery as can be and nearly impossible to strip with the previously mentioned strippers. The tiny Jonard ST-550 works wonderfully with Teflon—and any other kind of jacket material.
A drill and drill bit(s). A powered hand drill will work fine, however I like to use a step bit like the Irwin 10231 Unibit self-starting fractional step drill bit so I don't have to change the bit every time I want to drill a different-sized hole. You might also want to pick up a center punch like those from Starrett, as well as a very small bit (1/16" or 1/8") that's made to go through aluminum or metal to drill pilot holes for the step bit.
Rocket Sockets. They're not absolutely necessary, but they make installing jacks and hardware easier, faster, and safer. (Trust me—if you use pliers to tighten hardware, they're almost guaranteed to scratch the finish.) Rocket Sockets come in a set that includes all the sizes you'll need for building pedals.
Circuit-board blanks. Two kinds of circuit-board substrate are most widely used for pedal circuits: stripboard (Veroboard is a common brand) has preprinted, horizontal copper rails, while perforated board (aka "perf board") looks similar but doesn't have copper rails (although some types of perf boards have copper tracing around each of the holes). Parts get directly loaded through the top of the board and are connected to each other on the underside. Note: Because we'll be wiring all our circuit-tester parts together directly (aka "point to point"), you won't need circuit-board material for the direct purposes of this article.
Helping Hands circuit-board holder. This affordable Radio Shack accessory is incredibly useful for holding boards and parts while you solder them.
Digital multimeter. This isn't absolutely necessary for our project, but if you expect to keep building pedals it will definitely end up being the most important tool in your kit. Why? To avoid massive headaches at the end of your build, it's a good idea to get in the habit of testing all components before adding them to the circuit. A multimeter is also useful for checking continuity when you solder any two (or more) points together. Cheaper multimeters have a rotary dial that must be set to certain ranges of values to get an accurate reading. I prefer "auto-ranging" multimeters, which automatically test the exact value of an electrical component simply by putting a probe on each of its "legs." The affordable Vici VC97A works well in my experience.
Semiconductor analyzer. The Peak Atlas DCA55 is one of the most-used tools in our shop. We use it to quickly and accurately measure transistors and diodes.
Screwdrivers. One standard-size flathead and one standard-size Phillips head are a must. I also use small screwdrivers for all sorts of things, including forming leads, pushing wires and components into place in tight spaces, and installing knobs. Radio Shack's RS Pro 6-Piece works just fine.
X-Acto #1 precision knife. I can't tell you how handy and necessary these are in every aspect of my creations!
Scissors. I like Fiskars Softouch Micro-Tip Pruning Snips, but just about any kind will work.
Radio Shack Hot Holder. This silicon block has molded compartments for holding everything from 1/4" jacks to footswitches, RCA and XLR plugs, and even pickup switches while you solder parts onto them. I initially balked at the price, but I have to admit I'm using it often.
Desoldering bulb. Learning to desolder is an invaluable skill, as even the most seasoned pedal builders make soldering mistakes, and circuit-board pads and traces don't typically stand up to a lot of reheating while you try to do the job with just your soldering iron. A great way to practice is by desoldering components off PCBs from old or broken electronics. This is one of my favorite things to do, because you get comfortable with the process while saving a precious transistor or two from landfills. (There are other ways to desolder—some folks like to use a pump or solder wick. But I find the bulb to be the easiest, cleanest method, because you can apply different amounts of pressure to desolder more delicately.)
Parts Needed for Our Circuit-Tester Project
Hookup wire. 22- and 24-gauge stranded, pre-bond hookup wire is most common in pedal building, as anything thicker than 22 won't fit some hardware and some circuit-board holes, while anything thinner than 24 won't be robust enough. Jackets can be made of a few different materials— cloth-covered, polytetrafluoroethylene (Teflon)-coated, or the polyvinyl chloride (PVC) type most builders use. You can even get your preferred wire type in pre-cut, pre-"tinned" sets. However, knowing how to strip and tin wires (condition their tips for proper conduction—we'll talk more about this later) is a valuable skill, so I suggest using raw wire like the 24-gauge options available from LoveMySwitches.com.
DIY TIP: Although many pro pedal builders use a single color of wiring for their circuits, it's a good idea for new builders to purchase red, black, green, and blue wire, since, when you go a-hunting for layouts to build, you'll find that many use this color-coding scheme to denote positive, ground, input, and output wires, respectively—just as we have in our circuit-tester project.
Testing leads. Most pedal circuits have four wires coming off of the circuit boards: input (the green lines in our diagrams), output (blue lines), positive (red +9V lines), and ground (black). That means we'll need four testing leads. Because our circuit-testing box will be used over and over again, we should invest in quality, durable leads. I've found Mueller BU-2031-A-12-0 leads to be robust. (If you prefer longer leads, Velleman sets will work as well—but be sure to buy two packages, since each only comes with three.) The alligator-clip end of each lead hooks onto the input, output, positive, or ground wires of the circuit board we are testing, and the "banana-plug" end of each lead plugs into the corresponding banana post (see next entry for more) on the tester pedal.
You can also make your own leads to the exact lengths that are ideal for your workstation. If you go that route, Keystone Electronics 5046 alligator clips are a nice choice. Mueller even has a helpful video showing three different ways to attach an alligator clip to a wire. Meanwhile, AudioTrendsTV has a helpful video showing how to solder a banana plug. (Solder-less screw-on plugs are available, but in my experience the soldered variety are much more durable. If you buy the screw-on type, I recommend soldering the wire in for extra strength.)
You'll also need four banana plugs, and Mueller tapered-handle models are a good option. "Banana plugs" are single-wire electrical connectors used for joining wires to equipment, and the awesome thing about them is that the leads are removable, so you have a ton of options as far as tester leads go. Just be sure to buy the ones with an alligator clip on one end and a 4 mm male banana post on the other.
Banana posts. These are the jacks that the detachable test lead cables with alligator clip ends will plug into when the tester pedal is finished. They are also sometimes referred to as "binding posts" or "terminal binding posts," and you'll need four of these, too.
A metal enclosure. Aluminum enclosures are the most widely used for guitar pedals. For our project, I used an aluminum 1590BB-size enclosure I already had from a previous project. LoopholePedals.com is one of many places that offers drilling services for those who don't have the tools to do so themselves.
Jacks. Our test box has two 1/4" female audio jacks, as well as one 2.1 mm barrel power jack. I use Switchcraft #11 monoand #12B stereo jacks, and Lumberg or Mouser DC jacks.
9V batteries. Batteries are terrible for the environment, but we sometimes need them for circuit testing. I always plug into a circuit powered by just the battery at first. Once it powers on properly, I switch to a 9V DC center-negative power supply for further testing. Rechargeable 9V batteries help ease environmental impact and are easy to charge via USB cable. They don't seem to hold a full 9V charge, but since I only use them for the initial test, the 8.6V I've measured from their leads is good enough.
• 9V battery clip connector (center-negative) power-supply cable. To connect the rechargeable battery to the tester pedal's power jack without having to remove the back of the enclosure. (Don't worry—if you prefer a regular 9V connector, I'm including the wiring scheme for that, too.)
9V, center-negative regulated power supply. Clean power is crucial for a pedal, but especially so when you're testing it. I use the Electro-Harmonix US96DC-200BI, because the power seems to be clean and less noisy than others (I've tried more than a dozen brands).
A latching 3PDT (triple-pole, double-throw) switch. It can be either a footswitch or a toggle.
Note: Speaking of switches, it's a good idea to research how they work if you haven't already done so. Understanding how the internal mechanisms connect and how the connections change as the switch is engaged makes the whole off-board-wiring experience much less daunting. BeavisAudio.com has some very useful information on the subject, and DIY Guitar Pedals has an informative video, too.
Bypass LED (light-emitting diode) and LED holder. Pick any color you like. 5 mm and 3 mm models seem to be most popular for pedal building.
1kΩ 1/4-watt resistor. LEDs are quite robust, but they need a resistor attached as a current limiter so they don't blow. You can use a 2.2k or 4.7k resistor too. The higher the resistance, the dimmer the light will be.
The Pedal Builder’s Best Friend: How to Build a Circuit Tester
Okay, I think I've hyped this killer tool enough. Unless you need to take a sec to go online and consult our Soldering 101: A Step-by-Step Guide, let's build this thing! Here's a wiring diagram.
1. Drill the housing. Before we can start wiring, the enclosure needs holes drilled out to accommodate the input, output, and power jacks, as well as the LED and bypass (on/off) switch. If your enclosure didn't come with predrilled holes, you can drill for the jacks on the housing's top or sides, whichever you prefer. I prefer power and audio jacks on top, with the power jack in the center and the input and output jacks opposite each other whenever possible.
We also need to drill four holes for the banana posts that will be connected internally. As mentioned earlier, every circuit you build will have input (green diagram lines), output (blue), positive (red), and ground (black) wires that need to be connected to your tester pedal. Note: The enclosure I'm using already had four holes on top, so my layout reflects this. You might choose to put the banana posts on the side(s), top, or someplace else. That's the beauty of DIY!
I have a mantra: Measure three times, drill once. You can use a Sharpie or other marker to mark the spots you want to drill. Hit each mark with the center-punch tool, then drill pilot holes. Once pilot holes are drilled, you're ready to install your step bit in the drill. (Reminder: The step bit is marked on its side with size values so you know where to stop drilling for the desired hole size.)
PRO TIPS: Some DIY sites have drill guides you can download and print out to make the process easier, but it's still good to learn how to do it manually. Also, Barry Steindel from GuitarPCB.com has a great video tutorial on how to drill pedal enclosures with a hand drill, and DIY Guitar Pedals has one for those who prefer a drill press.
IMPORTANT: Most component and hardware manufacturers publish data sheets listing characteristics and specifications—including physical measurements—for their products. It's a good idea to consult the data sheet for each of your components prior to drilling so that you know how many steps of your step drill bit (or which sizes of standard drill bits) to use.
2. Prepare the switch. To start with, let's connect a couple of "jumpers" on the underside of our 3PDT switch so it functions as a "true bypass" switch (which provides the most transparent signal for circuit testing). This can be done a few different ways, but my preferred method is to add a wire between lugs 1 and 8, as well as lugs 6, 7, and 9. (As you see in the image below, some builders use a 0Ω resistor rather than a bare wire for the jumper between lugs 6, 7, and 9. It's perfectly fine to use a simple wire for this, which is why I didn't include a second resistor in the list of necessary parts for this build.) For now, only apply solder to the three bottom lugs, since the two other lugs (1 and 6) also need to accommodate the wires we'll add in later.
Note: Although you can use regular hookup wire, I use snipped-off leg pieces from resistors or other components for these jumpers.
3. Prepare the LED wiring "harness." First, we're going to trim the LED's ground (cathode) lead, which is the shorter leg. Then we'll "tin" the trimmed end by touching the soldering-iron tip to it, applying a tiny dab of solder, and then sliding the iron tip back and forth along the ground lead for a brief moment until the solder melts and the entire surface of the leg appears shiny. Why? Tinning limits corrosion of the metal leads and helps components fuse together better at solder joints. The LearnElectronics channel has a useful tinning demo video.
Next, cut all but a 1/4" off the 1kΩ resistor's legs, then tin the short end. Put the LED's body into one of the "hands" of the Helping Hands tool, with the legs facing inward, then put the long lead of the resistor in the other "hand," with the snipped, tinned leg facing in. Push the "hands" together until the two short, tinned leads of each component overlap. Touch the soldering-iron tip to the junction for a brief moment, add a dab of solder, and remove the iron's tip once the solder has pooled and settled in, nice and shiny. A shiny solder joint is generally a solid solder joint.
The leftover leg on the 1kΩ resistor is sometimes long enough to be soldered directly to the footswitch, as is the case here. But if your LED hole is further away than ours, you'll need to add a wire. To do this, trim the resistor's other leg to 1/4" and tin it. Next, strip and tin a piece of black hookup wire long enough to reach from the 3PDT switch to the LED hole. Now snip the LED's longer leg (the positive or "anode" lead), again to a 1/4", and tin it. Cut another wire long enough to reach from your power jack to the LED hole, then strip and tin the ends. Load the stripped, tinned wire into the other Helping Hands holder and push the "hands" together until the end of the wire overlaps the LED's anode. Solder them together so that the solder has pooled and settled, nice and shiny, as before.
Although it's not crucial, you can encase these two solder points in 1/8" shrink tubing for extra stability, neatness, and to help keep the joints from shorting out against each other or the enclosure (don't use electrical tape instead—you'll regret it!). The YouTube channel MrJustDIY has a helpful video on how to do so. The most important thing is to make sure your solder joint is good before you cover it. I recommend testing for continuity with a multimeter before adding the shrink stuff.
4. Install the enclosure's hardware. With our footswitch and LED harness ready to go, we're set to use those Rocket Sockets (or other appropriately sized socket wrenches) to attach the footswitch and the input, output, and power jacks.
As for the banana posts, they have a hollow, threaded column with an insert at the top that accepts a banana plug. IMPORTANT: You don't want that metal post touching the metal enclosure at all. Thankfully, banana posts come with plastic insulators that go around the post, ensuring that they don't short-out the circuit. Install the banana post from the top, as shown below.
Next, put the plastic insulator cylinder over the post, followed by the little tab thing, then the nut. Tighten it snugly, but be careful not to crack the plastic insulator by over-tightening.
Note: If you're wondering why my LED isn't installed in a holder/bezel, it's because my recycled enclosure already had an LED glued in. It's much cleaner and sturdier to use a holder or bezel, however. If you aren't using shrink tubing around the joints, it's imperative that none of the bare leads touch the bezel (if it's metal) or the enclosure. We don't want it to short out—or worse, to blow! When you install your LED, make sure the positive and ground wires are properly oriented before you push the LED into the holder. Point the positive wire toward the power jack, and gently bend the ground-plus-resistor lead toward the bypass switch.
5. Wire and solder the circuit. Measure the distance to and from each of the points that need to be connected, as per the wiring diagram—and, ideally, in the same colors. Be sure to add a couple extra millimeters on each wire, as it's really annoying to get in the building groove only to realize a wire is too short! Next, use your wire strippers to strip 1/4" of the plastic jacket off the ends of each wire. As you tin each wire end, keep in mind that PVC jacketing melts very easily, so don't apply heat too long or you'll end up with a mess. The tinned wire ends should look shiny all the way around, like they're encased in chrome.
TECH TALK: Let's discuss 1/4" jack anatomy for a second. We are using two types—our output jack is mono and has two tabs, while our input jack is stereo and has three tabs. Turn the input jack sideways, and you'll see three protective wafer layers separating three metal terminals on the jack. These are commonly referred to as the "tip" and "ring." The ring is above the second wafer. The tip is the terminal above the first wafer, just above the base of the jack itself. The ground tab, or sleeve, is connected to the center part of the jack at the base, floating above all three wafers, and does not have a protective wafer on top. The output jack will only have two protective wafers separating the two metal conductors (the ground and tip tabs). If you decide not to add the battery snap internally, you could use two mono Switchcraft jacks as you would not need the additional ring connection used for turning the battery on and off.
Okay, let's insert and solder all the ground wires first. I always use black wire to avoid confusion and match the diagram. Again, make sure each solder joint is shiny before you move to the next one. Also, be sure none of the wires are too taut, or they're likely to eventually come loose.
Next, I like to insert and solder the red, positive-connection wires. This is easier than ground wiring, because it only connects in two spots and one wire is already attached to the LED's positive leg. Note: Although the diagram looks like only one wire is attached to the power jack, a separate red wire will go from both the LED and the positive banana post to the power jack's sleeve pin (see photo). Both wires should fit there fine, but don't solder that joint until both wire tips are gently squeezed into the hole.
If you want to install a battery snap, do that now. Strip and tin the ends. Note: Soldering the red wire to the power jack's one remaining empty tab prevents the battery from losing juice—but only if you remember to unplug your 1/4"instrument cable from the input when you're not using the box. Plugging into the input connects the battery. Unplugging disconnects it.
Now let's install our input (green) wires. One goes from the tip of the input jack to lug 2 (middle lug in the leftmost column) of our 3PDT switch. The other green wire goes from the input banana post's tab to lug 1 (top left) on the switch, along with one end of the jumper.
To connect output (blue) wires, route one from the tip of the output jack to lug 8 (middle of rightmost column) on the switch. The second blue wire goes from the output banana post to lug 7 (top right) on the 3PDT switch.
Lastly, connect the LED's ground leg to lug 4 (top row, middle) on the footswitch. Remember, my example looks a little different and your ground will be the black wire coming off the LED.
6. Test the circuit with a multimeter. Set your meter to "continuity" mode (consult its manual if you're not sure how to do so), touch one of its probes to a solder point in our circuit tester, then touch the other probe to the solder point on the other end of that particular connection. For example, touch one probe to the solder point located on the input-jack tip, and touch the other probe to lug 2 (middle lug in the leftmost column) of our 3PDT switch. Your meter should beep or light up if you have a solid connection. Once you've tested and found continuity in all our circuit tester's connections, you'll know it's ready to start testing guitar-pedal guts.
Using your new circuit tester is really easy. First, make sure it's got power from a 9V battery or an adapter, then simply plug your guitar into the tester's input jack, and your amp into its output. Then attach each of the circuit-tester's four leads (input, output, ground, and positive) to the corresponding wires on the circuit board you're building or testing. In other words, connect the alligator clip from your new circuit-tester's input lead to your project pedal's input wire, connect the alligator clip from the tester's output lead to the output wire on your project pedal, and so on for the positive and ground connections, as well. That's it! Engaging the bypass switch will connect the circuit. Bypassing will yield a clean guitar signal.
Now you have a simple, easy way to test all the wonderful DIY effects you'll be building. Congratulations! Hopefully, this article has shined a little light on the processes involved with learning to wire a pedal. Moreover, I hope you had as much fun building it as I did! In fact, I'd love it if you'd share your tester-pedal shots with Loe Sounds (@loesounds) on Instagram Stories.
I would be remiss if I didn't acknowledge Steve Daniels and the crew at Small Bear Electronics for their dedication to providing education and reliable supplies to the DIY pedal community for 22 years. At publication time, Small Bear had announced it would soon be closing its doors. Pedal builders everywhere will miss them dearly, and we can only hope someone comes along to carry the torch and fill the big void Small Bear will leave.
DIY Pedal Sites You Should Check Out
- The DIYStompboxes.com forum is my go-to. It's where I met invaluable mentors like Pink Jimi Photon (of PJP Effects), and Dino Tsiptsis and Phil Moulder, whose Dead End FX site has intermediate to advanced projects and PCBs, including some pretty rare stompbox gems.
- The Effects Layouts blog features some of the tidiest PCBs and layouts for perf boards based on popular guitar-pedal schematics.
- The Tagboard Effects blog has Vero-type stripboard layouts for popular pedal schematics, as well as a helpful forum.
- Madbean Pedals hosts a forum with lots of really nice, helpful folks. They've also got downloadable PCB layouts, sell quality PCBs, and some of the most well-documented projects out there, from beginner to advanced level.
- Beavis Audio Research has a whole bunch of great information, including well-laid-out, easy-to-read diagrams.
- R.G. Keen's Geofex. Keen is practically the godfather of DIY guitar effects. Most of us couldn't be doing what we are doing without what we have learned from this invaluable site!
- RunOffGroove.com is an old-school site with great, bare-basics schematics and articles.
- ElectroSmash.com is a treasure trove of projects, schematics, component information, and detailed breakdowns of popular pedal circuits.
- MusicFromOuterSpace.com features mostly DIY synth stuff, but I learned so much from their articles. Ray Wilson's contributions to the DIY community are too many to count.
- Experimentalists Anonymous allows you to make your own layouts from dozens of schematics.
- DIY Layout Creator offers freeware for designing layouts and is great for learning.
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An easy guide to re-anchoring a loose tuning machine, restoring a “lost” input jack, refinishing dinged frets, and staunching a dinged surface. Result: no repair fees!
Pardon my French, but I’m about to misethe hell out of some en scenein this article about do-it-yourself guitar repair. Buckle-vous up.
The Guitarist is in the middle of double-tracking a solo. It’s not quite right. Creative juices are flowing, but at any moment, the gate could slam shut. Their social media feed is stagnant, and the algorithm thirsts for content. The studio is 80 bucks an hour. That new boutique fuzz pedal would sound great on this track, surely? It would, of course, as these things are the cure for all problems, but it rests just out of reach.
Desperate for a solution, the Guitarist rests their perfect new guitar against the warm tube amp–only for a moment … but a horrible amplified bwaang from wood, string, and concrete’s violent meeting breaks the temporary silence as gravity muscles potential into the kinetic. The Guitarist breathes a defeated “aw, man,” like a loosened balloon farting hopelessly across an empty room. The gate closes, juices no longer loose, locked, impenetrable by any transistor-based effect. And it’s time to assess the damage.”
I bet you saw yourself in the opening scene of Twenty-Four-and-Three-Quarter-Inches of Woe, which may be the title of the screenplay I just started to write, most likely due to the fact that you’ve made a similarly boneheaded mistake with your instrument.
Unfortunately, my storytelling skills didn’t save a nice new Epiphone Casino from sliding off my amp, meeting the floor, and earning some damage on the way down. Yeah, that’s a true story, and I’m sure something similar has happened to you as well. It can happen to anyone who plays guitar for long enough, but there’s no need for despair yet.
If you’ve been victimized by gravity like I have, as long as the damage isn’t major, you can fix a lot of things yourself. I’ll use my felled Casino as an example. It suffered a loosened tuner, an input jack that fell inside the guitar, a damaged fret, and a few dents in the finish. While I work, I’ll provide some suggestions for supplies and tools to keep in your home repair kit, just in case you ever need them.
Tools for the Tasks
We ordered all of the tools we used in these repairs, excluding the painter’s tape and the toothpicks, which we picked up during lunch at Jack’s Bar-B-Que, from StewMac.
The essentials:
• ESP Multi Spanner
• Archtop Guitar Helping Hand
• Guitar Tech Screwdriver Set
• 3 Corner Fret Dressing Files
• Ultra Thin Master Glue
• GluBoost Fill n’ Finish
• Rectangular Sanding Kit
Can’t Tune It like That
First, let’s take care of the loose tuner, since it’s currently in no shape to reliably hold string tension. The tumble knocked it sideways, which loosened the screws holding in the key, which caused the wood around the screws to strip. It’s alarming to see, but this is a very simple fix.
Add to Repair Kit: Round toothpicks, water-thin CA glue, glue applicator tips, safety goggles
[Note: For the unfamiliar, CA is short for cyanoacrylate. It’s commonly referred to as “Super Glue,” but since that is a brand name, not the generic, I’ll refer to it here as “CA glue.”]
First, remove the tuner by backing the screws out, then pull the tuner from the headstock. My Casino’s tuning keys use a press-in bushing to hold the post straight in the headstock, so no further disassembly is required. However, if you experience this issue with a guitar with more modern-styled tuning keys, you’ll need to use an appropriately sized wrench or socket to remove the screw-in bushing before removing the key.
Next, break a toothpick in half, insert the thicker end into the hole where your mounting screw used to be. Break it off flush with the surface, and repeat the process with the other hole.
Safety goggles on: It’s CA glue time. Trust me, you do not want to squirt this stuff into your eye. Fit an applicator tip to the glue bottle and practice your squeeze on a scrap piece of paper or wood, far away from anything you don’t want glued to your guitar or yourself. This stuff is magic—it will bond things you never intended if you aren’t careful.
All you need is a very small drop, so practice until you can confidently flow out just a small controlled amount. Once you’ve mastered that, drop a small amount of water-thin CA glue into each filled hole. It will soak through the toothpick into the surrounding wood just enough for this quick fix. Let it cure for at least 15 minutes, but longer is even better.
Pop the tuner back in and drive the screws straight into the toothpick-filled holes. The screw will compress the toothpick into the existing wood and create new threads strong enough to hold your tuner in place.
Congratulations! You fixed it well enough to at least make it through a session. I’ve done this on several guitars that lasted years with no issues, so you should be confident in your work.
Hit the Road, Jack
Look, there’s no way to sugarcoat this. Fishing an output jack out of a hollowbody guitar is a pain. You can do this. All you need is patience and a few handy gadgets.
Add to Repair Kit: flashlight, multi-spanner, small drywall anchor, “helping hand,” small screwdriver
Your first task is to locate the jack inside the guitar. Odds are it didn’t fall far away from where it needs to be, since it’s probably wired to one of your control potentiometers. Use your flashlight to shine some light inside the f-hole to help find it.
I found mine wedged against the treble side of the rim, a little farther away than I can reach with my fingers. This is not zesty. I am unhappy but equipped and determined.
The tool I described as a “helping hand” becomes useful here. It’s essentially just a bent hook at the end of a handle made out of pliable heavy wire. Several guitar parts suppliers sell something similar. I got mine from StewMac for a reasonable price, but if you want to be thrifty about it, there’s no reason why you can’t cut and bend a wire coat hanger.
Take a few deep breaths, and working through the f-hole, use the hook end of your helping hand to gently pull the output jack back toward where it was mounted. Bend the helping hand however needed to reach the jack as easily as possible.
I managed to pull the jack back enough to put a small screwdriver through the jack’s mounting hole and then through the jack itself. That screwdriver will act as a guide while I lift the jack back into place with the helping hand.
You should expect this will take several attempts. Try not to get frustrated. With enough patience, you’ll be able to get the jack back where it belongs. Once you have the jack in place, carefully thread the washer and nut back onto the jack. It shouldn’t take much effort to thread it back on. Just be careful not to cross-thread the nut.
Now that the nut is threaded on enough so it won’t fall back in, the challenge is to tighten it without twisting the jack itself to avoid breaking any wires. I’ve seen and used a few different methods to accomplish this, but I came across one recently that I really like.
This is where you’ll use your drywall anchor. Get one small enough to fit inside the jack without using too much force, then tighten the screw in the anchor so that it spreads to fit tightly inside the jack. This will hold it steady enough to tighten the nut with a multi-spanner tool or an appropriately-sized wrench.
I like a multi-spanner for this job, because it’s always the right size and is slim enough to not be clumsy for operations like this. Like the helping hand, lots of suppliers sell something similar using different names. Mine is made by ESP and also arrived in my StewMac tool box. I use it all the time for all sorts of tasks.
Once the nut is tightened, unscrew the drywall anchor, remove it, and test the jack for sound by plugging your guitar into an amp. A positive result should be obvious at this point, but if you don’t hear any signal, or an excessive consistent buzz, get in touch with your local repair tech.
Got a Dent In My Fret, Man
Honestly, face-first is probably the best way a guitar like my Casino could have hit the ground. The damage could’ve been far worse. Check any forum for endless complaints about Gibson/Epiphone headstock breaks. But I do need to address some damage to a fret caused during the fall.
The issue here is that plain steel electric guitar strings—like your G, B, and E strings—are considerably harder than most frets (my stainless steel fret contingency, put your hands down and let me finish), so it’s possible for a string to leave a small sharp dent in a fret if you hit it with enough force. This specific issue might go unnoticed until it’s time to bend a note at that fret, then you’ll feel and hear the string catch it. No good.
Before we get started: Having allof your frets carefully levelled, recrowned, and polished is alwaysa better solution than partially levelling just a few frets. But considering the entire premise we’ve constructed, which is a situation where we just want the guitar back in action relatively quickly, a partial fret level on the upper frets is perfectly fine as long as it’s done carefully.
Add to Repair Kit: Crowning file (three-corner or rounded), assortment of sandpaper (400 grit to 800 should be fine), 0000 extra-fine steel wool (optional), fretboard conditioner, permanent marker.
First thing we need to do is identify which frets need the work. Let’s say you have a nick in your 17th fret on the treble side under the B string. The goal is to bring the height of that damaged fret and all the frets past it down until the nick disappears. After that, remove the strings before you begin working.
To accomplish this, mark the damaged frets and all frets past it with a permanent marker. A trusty black Sharpie works great for this, but any darker color works fine. For this repair, we only need to work on the treble side of the frets, so that’s all you need to focus on. Also, use some blue painter’s marking tape to protect the area of the guitar near where you will be working. Small slips of a file or sandpaper can cause some nasty injuries to the guitar’s surface.
Next, level the damaged fret and all frets past it (moving toward the bridge) with something stiff enough to not flex under pressure. I keep an old credit card—a nice sturdy one—with a bit of 400-grit sandpaper glued to one side along the shorter edge, 800 grit on the other side. Start with the 400 and work your way down, being careful not to use too much pressure. Let the sandpaper do the work.
You’ll notice the ink is removed as you sand. The way to make sure you’re keeping everything level is to stop frequently and observe the new clean areas on top of each fret. Each one should be about the same width.
This will take a while. A 400-grit sandpaper does not remove material quickly, 800 grit even less so. I’m suggesting this technique because working slowly makes it more difficult to get yourself in trouble. Several suppliers sell mini files for spot leveling, but I don’t recommend starting there because they remove fret material pretty aggressively.
Eventually you’ll notice the little divot in your 17th fret is almost gone. Now’s time to switch to 800 grit to finish the job. You guessed correctly: This will take even longer, but it’ll leave a nice finish without removing any more material than necessary.
Great! Now you have five flat-topped frets. That won’t sound very good, so now you need to re-crown them, giving them a rounded profile to match the other frets. I like to use a 3-corner file to slowly round over each side of the fret, working from the fretboard up, but if you feel like dropping some serious flow on a specialized crowning file, this job can be a lot easier. Be sure to get the marker back out, ink up each fret, and stop filing when just a tiny sliver of ink is left on top of each fret.
Use a piece of 800 grit paper to remove any file marks and smooth out each fret. If you have finer grits, you could work your way up to 1200 or so, but don’t go too hard or you could undo your work. You just want the frets clean and smooth. At this point, I like the way frets feel after a quick buff with 0000 steel wool, but the mess left behind does rightfully deter a lot of repair techs. If you opt in for this, be sure to tape off your pickups and consider finding a second location for this step.
Work in some fretboard conditioner if you like (skip it if you have a maple or synthetic board; no need for that here), put some new strings on, and check your work. Play every note on these frets, to make sure they ring out without any buzzes. It may not look perfect, but as long as the guitar sounds good, you’re okay until it’s time for a full level/crown/polish job.
Not Finished Until It’s, Uh, Finished
Now for the last souvenir from my Casino’s short journey to the floor. I noticed a few spots along the rim of the guitar where the finish was damaged. Specifically, it looks like the guitar hit something with an edge on the way down hard enough to put a couple of jagged dents in it, right along the binding.
Funny, that’s actually what binding is intended for–protecting edges and corners from damage. Anyway, we need to discuss a few things about guitar finishes.
For the purpose of this article, I’m only going to discuss repairs to the clear coat, since that’s where my damage is. Most guitars now are finished using polyurethane or lacquer for the top clear-coat layer.
Speaking verygenerally, lacquer finishes are softer and less durable, which makes hiding repairs a lot easier if you have the skills and patience. Polyurethane finishes are hard and tough in every way: hard to damage and tough to hide repairs regardless of skills or patience.
I happen to know that my formerly mint-condition Casino has a polyurethane finish, which means I’m going to lower my expectations with this repair. Instead of trying to make it look like it never happened, which will take a lot of work, I’ll just try to keep it from getting worse over time, which will take considerably less work.
It also means I won’t be discussing how to repair lacquer finishes, which is a bit more in-depth, requires a lot more patience and practice, and is therefore not really recommended for the average DIY’er—at least not in the scope of this piece. So if your guitar has a lacquer finish, I don’t think this part applies. Let someone else take care of it, or maybe skip this part and learn to love your guitar as is. The latter is still an admirable move.
Add to Repair Kit: Nothing! You already have what you need from the previous repairs. Feel good about that.
Since the damage is a pronounced dent with sharp edges in the clear coat, all I really need to do is seal it with an appropriate material. And the material appropriate for repairing polyurethane finishes is—you guessed it—CA glue, because it dries hard, clear, and quickly, much like polyurethane.
Step one: Use painter’s masking tape around the area of the damage, just in case the glue runs when applied. Step two: Put glue on the dented finish. CA glue will fill in all the small cracks within the damage and seal the existing finish. Be careful; use the smallest-drop-possible technique you perfected when fixing the tuning peg, and give it plenty of time to dry.
That’s it. That’s all I need to keep the finish from continuing to chip the more I play it. Yes, I saved the easiest one for last, as a little treat.
Obviously, this isn’t a particularly beautiful repair, so I could go above and beyond by using thicker CA glue—for example, GluBoost Fill n’ Finish—to fill it in completely, sand it level, and polish the area back to the original mirror gloss. Dan Erlewine has a few excellent YouTube videos outlining this exact method that are easy to find, and I encourage you to try if you’re so inclined. But for my purposes, this will do.
Accidents will happen if you’re actually playing your guitar, but they’re no cause for panic when they do. Even though the guitar isn’t perfect anymore, it’s perfectly playable, and I can get by with it for now. I broke it, so I fixed it, which is something I hope you feel empowered to do should you break yours.
Next time, I’ll use a good guitar stand.
The least exciting piece of your rig can impact your tone in a big way. Here’s what you need to know.
Hello, and welcome back to Mod Garage. This month, we will have a closer look at an often overlooked part of our guitar signal chain: the guitar cable. We’ll work out what really counts and how your cable’s tonal imprint differs from your guitar’s tone-control function.
Today, the choice of guitar cables is better than it’s ever been, and you can choose between countless options regarding color, stability, plug style, length, diameter, bending strength, shielding, etc. A lot of companies offer high-quality cables in any imaginable configuration, and there are also cables promising special advantages for specific instruments or music styles, from rock to blues to jazz.
Appearance, stability, longevity, bending stiffness, and plug configuration are matters of personal preference, and every guitarist has their own philosophy here, which I think is a great thing. While one player likes standard black soft cables with two straight plugs, their buddy prefers red cables that are stiff as hell with two angled plugs, and another friend swears by see-through coiled cables with golden plugs.
“We often want to come as close as possible to sounding like our personal heroes, but we fail because we’re using the wrong cable for a passive guitar.”
Regarding reliability, all these parameters are important. Who wants a guitar cable making problems every time you are on stage or in the studio? There are also technical parameters like resistance, capacitance, transfer resistance on the plugs, and more. Without making it too technical, we can summarize that, sound-wise, the only important technical parameter for a passive guitar circuit is the capacitance of the cable. Sadly, this information is often missing in the manufacturer’s description of a guitar cable, and there’s another thing we have to keep in mind: Most manufacturers try to offer cables with the smallest possible capacitance so the guitar can be heard “unaltered” and with a “pure” tone. While these are honourable intentions, they are self-defeating when it comes to making a guitar sound right.
Let’s take a trip back to the past and see what cables players used. Until the early 1980s, no one really cared about guitar cables—players simply used whatever was available. In the ’60s and ’70s, you could see a lot of ultra-long coiled cables on stage with players like Clapton, Hendrix, May, Townshend, Santana, and Knopfler, to name just a few. They used whatever was available, plugged in, and played without thinking about it. Ritchie Blackmore, for example, was famous for notoriously using incredibly long cables on stage so he could walk around. Joe Walsh and many other famous players did the same. Many of us have these players’ trademark sounds in our heads, and we often want to come as close as possible to sounding like our personal heroes, but we fail because we’re using the wrong cable for a passive guitar. So what are we talking about, technically?
It’s important not to look at the guitar cable, with its electrical parameters, as a stand-alone device. The guitar cable has to be seen as part of the passive signal chain together with the pickups, the resistance of the guitar’s pots (usually 250k or 500k), the capacitance of the wires inside the guitar, and, of course, the input impedance of the amp, which is usually 1M. The interaction of all these in a passive system results in the resonance frequency of your pickups. If you change one of the parameters, you are also changing the resonance frequency.
”Ritchie Blackmore, for example, was famous for notoriously using incredibly long cables on stage so he could walk around.“
You all know the basic formulation: The longer the cable, the warmer the tone, with “warmer” meaning less high-end frequencies. While this is true, in a few moments you will see that this is only half the truth. Modern guitar cables are sporting a capacitance of around 100 pF each meter, which is very low and allows for long cable runs without killing all the top end. Some ultra-low-capacitance cables even measure down to only 60 pF each meter or less.
Now let’s have a look at guitar cables of the past. Here, capacitances of up to 400 pF or more each meter were the standard, especially on the famous coiled cables. See the difference? No wonder it’s hard to nail an old-school sound from the past, or that sometimes guitars sound too trebly (especially Telecasters), with our modern guitar cables. This logic only applies to our standard passive guitar circuits, like those in our Strats, Teles, Les Pauls, SGs, and most other iconic guitar models. Active guitars are a completely different ballpark. With a guitar cable, you can fine-tune your tone, and tame a shrill-sounding guitar.
“No problem,” some will say. “I simply use my passive tone control to compensate, and that’s it. Come on, capacitance is capacitance!” While this logic seems solid, in reality this reaction produces a different tone. “Why is this?” you will ask. Thankfully, it’s simple to explain. You might be familiar with the typical diagrams showing a coordinate system with "Gain/dB" on the Y-axis and "Frequency/kHz" on the X-axis. Additional cable capacitance will shift the resonance frequency on the X-axis, with possible differences of more than one octave depending on the cable. A cable with a higher capacitance will shift the resonance frequency towards the left and vice versa.
Diagram courtesy Professor Manfred Zollner (https://www.gitarrenphysik.de)
Now let’s see what happens if you use your standard passive tone control. If you close the tone control, the resonance frequency will be shifted downwards mostly on the Y-axis, losing the resonance peak, which means the high frequencies are gone. This is a completely different effect compared to the additional cable capacitance.
Diagram courtesy Professor Manfred Zollner (https://www.gitarrenphysik.de)
To summarize, we can say that with different cable capacitances, you can mimic a lot of different pickups by simply shifting the resonance frequency on the X-axis. This is something our passive tone control can’t do, and that’s exactly the difference you will have to keep in mind.
So, let’s see what can be done and where you can add additional cable capacitance to your system to simulate longer guitar cables.
1. On the cable itself
2. Inside the guitar
3. Externally
In next month’s follow-up to this column, we will talk about different capacitances and how you can add them to your signal chain with some easy-to-moderate modding, so stay tuned!
Until then ... keep on modding!
Do you overuse vibrato? Could you survive without it?
Vibrato is a powerful tool, but it should be used intentionally. Different players have different styles—B.B. King’s shake, Clapton’s subtle touch—but the key is control. Tom Butwin suggests a few exercises to build awareness, tone, and touch.
The goal? Find a balance—don’t overdo it, but don’t avoid it completely. Try it out and see how it changes your playing!
An ode, and historical snapshot, to the tone-bar played, many-stringed thing in the room, and its place in the national musical firmament.
Blues, jazz, rock, country, bluegrass, rap.… When it comes to inventing musical genres, the U.S. totally nailed it. But how about inventing instruments?
Googling “American musical instruments” yields three.
• Banjo, which is erroneously listed since Africa is its continent of origin.
• Benjamin Franklin’s Glass Armonica, which was 37 glass bowls mounted horizontally on an iron spindle that was turned by means of a foot pedal. Sound was produced by touching the rims of the bowls with water-moistened fingers. The instrument’s popularity did not last due to the inability to amplify the volume combined with rumors that using the instrument caused both musicians and their listeners to go mad.
• Calliope, which was patented in 1855 by Joshua Stoddard. Often the size of a truck, it produces sound by sending steam through large locomotive-style whistles. Calliopes have no volume or tone control and can be heard for miles.
But Google left out the pedal steel. While there may not be a historical consensus, I was talking to fellow pedal-steel player Dave Maniscalco, and we share the theory that pedal steel is the most American instrument.
Think about it. The United States started as a DIY, let’s-try-anything country. Our culture encourages the endless pursuit of improvement on what’s come before. Curious, whimsical, impractical, explorative—that’s our DNA. And just as our music is always evolving, so are our instruments. Guitar was not invented in the U.S., but one could argue it’s being perfected here, as players from Les Paul to Van Halen kept tweaking the earlier designs, helping this one-time parlor instrument evolve into the awesome rock machine it is today.
Pedal steel evolved from lap steel, which began in Hawaii when a teenage Joseph Kekuku was walking down a road with his guitar in hand and bent over to pick up a railroad spike. When the spike inadvertently brushed the guitar’s neck and his instrument sang, Kekuku knew he had something. He worked out a tuning and technique, and then took his act to the mainland, where it exploded in popularity. Since the 1930s, artists as diverse as Jimmie Rodgers and Louis Armstrong and Pink Floyd have been using steel on their records.“The pedal steel guitar was born out of the curiosity and persistence of problem solvers, on the bandstand and on the workbench.”
Immigrants drove new innovations and opportunities for the steel guitar by amplifying the instrument to help it compete for listeners’ ears as part of louder ensembles. Swiss-American Adolph Rickenbacker, along with George Beauchamp, developed the first electric guitar—the Rickenbacker Electro A-22 lap steel, nicknamed the Frying Pan—and a pair of Slovak-American brothers, John and Rudy Dopyera, added aluminum cones in the body of a more traditional acoustic guitar design and created resophonic axes. The pedal steel guitar was born out of the curiosity and persistence of problem solvers, on the bandstand and on the workbench.
As the 20th century progressed and popular music reflected the more advanced harmonies of big-band jazz, the steel guitar’s tuning evolved from open A to a myriad of others, including E7, C6, and B11. Steel guitarists began playing double-, triple-, and even quadruple-necked guitars so they could incorporate different tunings.
In Indianapolis, the Harlan Brothers came up with an elegant solution to multiple tunings when they developed their Multi-Kord steel guitar, which used pedals to change the tuning of the instrument’s open strings to create chords that were previously not possible, earning a U.S. patent on August 21, 1947. In California, equipped with knowledge from building motorcycles, Paul Bigsby revolutionized the instrument with his Bigsby steel guitars. It was on one of these guitars that, in early 1954, Bud Isaacs sustained a chord and then pushed a pedal down to bend his strings up in pitch for the intro of Webb Pierce’s “Slowly.” This I–IV movement became synonymous with the pedal-steel guitar and provided a template for the role of the pedal steel in country music. Across town, church musicians in the congregation of the House of God Keith Dominion were already using the pedal steel guitar in Pentecostal services that transcended the homogeneity of Nashville’s country and Western clichés.
Pedal steels are most commonly tuned in an E9 (low to high: B–D–E–F#–G#–B–E–G#–D#–F#), which can be disorienting, with its own idiosyncratic logic containing both a b7 and major 7. It’s difficult to learn compared to other string instruments tuned to regular intervals, such as fourths and fifths, or an open chord.
Dave Maniscalco puts it like this: “The more time one sits behind it and assimilates its quirks and peculiarities, the more obvious it becomes that much like the country that birthed it, the pedal steel is better because of its contradictions. An amalgamation of wood and metal, doubling as both a musical instrument and mechanical device, the pedal steel is often complicated, confusing, and messy. Despite these contradictions, the pedal-steel guitar is a far more interesting and affecting because of its disparate influences and its complex journey to becoming America’s quintessential musical instrument.”