Fill n’ Finish is suited to manufacturers, craftspeople, luthiers and professional restorers who want to make invisible, durable repairs without affecting the appearance of the surface.
The product effectively fills cracks, pores, marks and minor damage. It creates a hard, polishable surface that lets you keep working on the repair by sanding, colouring and polishing. The result blends naturally into the surrounding material. The product levels out evenly, stabilises the surface and dries to a crystal-clear finish.
Unlike traditional wood fillers and filling compounds, Fill n’ Finish shrinks minimally. It gives a strong, durable and transparent repair. Many use the product when restoring guitars, fine furniture, wooden details, interior joinery and other projects where the finish is crucial.
Fill n’ Finish combines filling and finishing in a single step. This saves time and gives a professional end result.
For best results – use together with GluBoost Accelerator
The Fill n’ Finish system cures slowly. GluBoost therefore recommends using the product together with one of the company’s accelerators. Apply thin layers and cure between each layer. This lets you build up the repair quickly and in a controlled way.
Once cured, the material gives a hard, crystal-clear and stable surface that still retains some flexibility. This combination is perfect for repairs where both strength and appearance matter. You can then sand the surface in stages, from coarse to fine grit, and finish by polishing to a high gloss. The result blends naturally into the surrounding surface.






