Galloup’s Plek tech Adam Winarski preps a Yamaha acoustic for the machine.
Presently, many certified guitar-repair specialists possess the expertise required to deliver an instrument that both sounds and plays wonderfully. The standards set by manufacturers and distributors have significantly risen, safeguarded by rigorous quality protocols to guarantee the best possible acoustic experience for customers. Additionally, lutherie training has raised the bar for critical processes, and one of the most tricky is fretwork.
Traditional fretwork once involved manual labor, with technicians utilizing sandbags or similar supports to steady the neck as they straightened it with a truss rod during the filing process. A notable advancement in this field came in the mid 1970s when Don Teeter, an author and repair expert, imposed a new method: fixing the guitar body to the bench and using blocks to maintain the neck in a playing position. This refinement was one of many in the continued quest to produce superior instruments by standardized methods.
An example of the Plek’s readings from an acoustic guitar.
Photo courtesy of Galloup Guitars
In the late 1970s, another pivotal innovation was introduced by Dan Erlewine. He created an advanced fret jig with a specialized body-holding system and neck supports, adding another layer of precision to the repair process. During my collaboration with Dan in 1985, we developed a rotating neck jig that counterbalanced the forces of gravity, keeping the instrument in its playing orientation while adjusting the neck supports. This step represented a significant leap in establishing control and standardization of fretwork procedures in our industry. By 1986, our approach had evolved into a freestanding workstation coupled with a sophisticated hold-down mechanism and enhanced neck supports, culminating in increased accuracy, efficiency, and consistency. Over the decades, the Erlewine/Galloup rotating neck jig has become a benchmark in numerous shops, enhancing fretwork performance.
"This step represented a significant leap in establishing control and standardization of fretwork procedures in our industry."
By the 1990s, automated and computerized technologies permeated the guitar manufacturing and repair sectors. Initially applied by import companies in the mass production of guitars, the technology, although expediting processes, did not immediately achieve high execution standards. However, the tech dramatically improved over time, with computer-driven systems eventually transforming the industry. Contemporary automated production utilizing such advancements meets exceedingly high standards of precision. Some bespoke guitar manufacturers, such as Steve Andersen, were pioneers in adopting these methods, but it was companies like Taylor that established them in the modern era.
Inevitably, the progression of technology extended beyond the mere production of parts. Around 1995, German engineer Gerd Anke envisioned the integration of computer-assisted technology into enhancing instrument playability, giving rise to Plek technology, which uses computers to precisely measure and analyze the various components of a guitar, like neck relief, fret height, nut and bridge specs, and more. Nashville guitar-repair tech Joe Glaser was among the first to recognize the machine’s value, followed by San Francisco luthier Gary Brawer. When Heritage Guitar Inc. invested in a Plek machine, the guitar industry could no longer disregard the significance of this innovation.
“The machine’s scanning data confirmed that there was one nature of an ideal fret plane, done by hand or machine, and unsurprisingly, it conformed exactly to what physics predicts, not personal mojo.”
In the spring of 2022, Galloup Guitars obtained its first Plek machine. Promptly, our technician Adam Winarski paved the way for the Plek’s integration in our shop. Now, it’s a rarity for an instrument to leave our shop without having undergone Plek analysis and machining. Impressed by the results of our integration, we created “Intro to Plek” as a course for all students enrolled at the Galloup School of Lutherie, offering our students a practical introduction to this technology. We furthered this educational initiative with a comprehensive one-week intensive “Plek Certification Training Course” for both students and the public. This advanced Plek course serves those seeking to boost their knowledge base and employability in this high-precision field.
Plek is rapidly becoming an industry standard for major manufacturers and smaller shops alike. However, this does not mean that those without access to this technology cannot execute proficient fretwork. Personally, I continue to use my Erlewine/Galloup neck jig—not only out of nostalgia, but also because it remains an excellent method for delivering accurate and reliable guitars. Still, it’s undeniable that the process of fretting, fret dressing, and analytics of fretted instruments has undergone significant transformation, resulting in better sounding—and playing—guitars. And ultimately, that’s what it’s all about.
This vintage Tele’s neck and frets show lots of road wear, but it’s straight and dry.
This was not something that could be seen at the point of purchase. But at some point, that company wasn’t drying the wood, because my experience with instruments built around 1964 is that they didn’t have this problem. I’ve never seen a vintage Fender built before 1964 where the frets were sticking out the side of the neck because they hadn’t dried the fretboard well enough, and it shrank.
For the most part, there’s an extraordinary amount of trust when you’re buying an instrument. For example, customers trust that the frets are installed in the correct positions without checking each fret position with a tuner. This trust is mostly deserved, as most frets are generally installed in the right places. What’s sometimes not installed in the correct place is the nut. This controls how open chords play in tune down in the first position. I’m going to make a list of the things I believe you cansee when you buy a guitar, and the things you can’t. My hope is that it helps you make your next purchase with confidence.
Tuning pegs are among the easy-to-inspect items when shopping for a guitar. The peg at far left has clearly seen better days.
In general, here’s a list of what you can see:
- Tuning pegs and how they operate
- If the nut was cut well in terms of string height over the frets
- The neck shape as regarding how it is comfortable in your hand
- How the truss rod adjusts
- How well the instrument was inlaid in the fretboard
- How the side dots look
- How professional the binding is
- If the neck angle is generally acceptable
- If you like the shape and comfort of the body
- The beauty of the finish
- Overall aesthetic quality
- The sound of the pickups
- The electronic controllability
- Comfort of the bridge
- If the guitar intonates at the 12th fret
- How well is the guitar set up
The “skunk stripe” on this old Tele’s neck remains well-seated.
In general, here’s a list of what you can’t see:
- Are the woods wet under the finish
- How well are the woods dried?
- Will the fretboard shrink so the frets stick out of the neck over time?
- Are the tuning pegs deadening the tone?
- What’s the nut made of and how well it is glued on?
- Are the nut slots too narrow, creating tuning problems?
- Are the frets level?
- Is the truss rod deadening the neck?
- Do the pickups squeal at really high volume? (You may not know this until testing the guitar in a live setting.)
- How thick and how soft is the finish?
- Will the finish last a lifetime?
- Will all the glue joints hold up over time?
- How well does the instrument record?
- Will the frets move over time from reactions to things like sweat?
So, it comes down to trust. Did the guitar-making company tend to all the things that you can’t see when you buy the instrument?
“My goal, as a guitar maker, is that you can take the guitar out of the case and play a gig or a recording session without a repairman working on it first.”
The best way to tell if you want to buy a guitar is to play it! If an instrument is built really well, your experience of playing it will give you a good indication of how well the things you can’t see were done. If the instrument is really trebly and has no bass or midrange, maybe you should walk away from that purchase. If you strum the instrument and go, “Oh my god, that sounds great,” and then you plug it in, and it sounds beautiful—buy it. By the way, online shopping has made this process fairly painless as well, so you can play guitars in stores as well as shop as on the internet.
My goal, as a guitar maker, is that you can take the guitar out of the case and play a gig or a recording session without a repairman working on it first. That said, my personal guitars are often in our PTC (tech center) because of little tweaks that I want done. To tinker, in my mind, is normal. To have to pay for a setup on a brand-new guitar is not. Happy shopping.
Name: Dave Young, designer; David Thiele, master woodworker
Hometown: San Diego, California
Guitar: Guitiki
Fortunately, my friend and colleague David Thiele, a seasoned woodworker, was on the verge of retirement and planning to invest in a CNC machine. Eager to embark on this project together, we began our collaboration in early 2020.
Through our partnership, I would send David test files of the guitar body, which he skillfully cut out of foam using the CNC machine. This allowed me to assess the shapes for comfort and size. Every aspect of this project was a trial-and-error learning experience, but immensely rewarding as we discovered innovative ways to accomplish each task.
Thanks to the help of electrical engineer Carter Smith, Guitiki’s eyes light up in sync with what’s being played.
For example, I assumed we would purchase a pre-made neck, but David insisted on crafting one from scratch. As expected, the neck proved to be challenging as we made several attempts at it. Attaching the frets was particularly frustrating, but David eventually figured it out by creating custom tools to set them firmly in place. In addition, I learned how to properly file and level them.
“Every aspect of this project was a trial-and-error learning experience, but immensely rewarding as we discovered innovative ways to accomplish each task.”
The electrical components for the eyes posed another formidable challenge. The idea was to not only have the tiki eyes glowing but also flickering rhythmically in sync with the playing. Unfortunately, I had no idea how to build such a device. Enter Carter Smith, a close friend and electronics engineer. Carter graciously designed an ingenious analog board that brought my vision to life, adding a mesmerizing touch to the guitar’s persona.
Even the pickup selector switch on Guitiki is tiki-themed.
The challenges and learning curves we encountered were monumental, intensified by the unexpected obstacles presented by Covid and a health scare. Nevertheless, we persevered, and by 2023 we had completed the build, affectionately naming it “Guitiki.” Our accomplishment didn’t go unnoticed, as we proudly entered it into the San Diego County Fair woodworking competition and secured second place in the musical instruments category. Currently, we are embarking on an exciting new “Son of Guitiki” build.
The journey has been nothing short of remarkable. Not only did we construct an exceptional guitar, but we also forged an enduring friendship that will last a lifetime. If you would like to learn more about the Guitiki and the build process, a video and website documenting the journey can be found at guitiki.com.
If your story is chosen, you’ll also receive a $100 virtual gift card from Allparts, the industry’s leading supplier of guitar and bass parts! All entrants will receive a 20-percent-off coupon to allparts.com.
Please note that the coupon cannot be combined with other promotions.