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GluBoost Introduces Fill n' Finish Flexible Gel Filler / Adhesive

GluBoost Introduces Fill n' Finish Flexible Gel Filler / Adhesive

GluBoost has introduced the company’s new Fill n' Finish Flexible Gel. It’s the first ultra-thick gel product in the Fill n' Finish line, bringing the same performance of the series to applications that demand greater viscosity and gap-filling capability.


Designed for wood finish work, ding repairs, glue-ups, and 3D printing, it bonds dissimilar materials, is compatible with all thermoplastics, and seals wood without penetrating the surface — meaning it won't darken or wet the workpiece.

If desired, you can add GluBoost MasterTints and match the flexible gel’s color to your guitar finish.

Like all Fill n' Finish products, nitrocellulose lacquer can be applied directly over Fill n' Finish Flexible Gel with completely invisible results. Pore filling, ding repair, binding, purfling work, and fabrication applications are all well within its range. All GluBoost products are stored in-house in refrigerated chillers to ensure maximum freshness and shelf life.


Woodworking Applications

  • Dries water clear and flexible — never creeps
  • Extended open time for precise positioning
  • Safe for use on all finishes: nitro, lacquer, polyurethane, and water-based
  • Nitrocellulose lacquer can be shot directly over cured product with invisible results
  • Remains flexible when cured, unlike standard CA — lacquer adheres without issue
  • Ideal for rosettes, binding channels, bone-to-tie-block gluing, purflings, heel caps, and more
  • Pin-in tip cap prevents clogging
  • Use with GluBoost Accelerator for fast, glass-clear finish and repair results

GluBoost Fill n' Finish Flexible Gel comes in a 2 oz. container with a street price of $20. For more information visit gluboost.com.