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gluboost.com · Fine Wood Glues, Fills & Repairs
Stop Waiting on Your Finish. GluBoost Fill N' Finish Flex Gets You There Fast.
Featured Product
Fill N' Finish™ Flexible Gel
Pro Formula
An ultra-thick gel CA that fills pores, seals dings, and pulls finish-grade results without darkening your wood. Shoots nitro right over the top. Flexible cure means lacquer actually sticks.
If you've ever spent 45 minutes drop-filling a dent with regular CA only to watch the lacquer peel off the edge of the repair — you already know the problem. Most CA goes in hard and brittle. Lacquer doesn't stick to brittle. You sand it back, try again, repeat until you give up and shoot straight lacquer and just live with the slight shadow.
GluBoost Fill N' Finish Flex Gel is a different animal. It's an ultra-thick gel that cures flexible — so your topcoat has something to actually bond to. It doesn't penetrate and wet the wood (no darkening on your bare spruce tops), and you can shoot nitrocellulose lacquer straight over it with zero witness line.
Where it earns its keep on the bench
- → Pore filling on open-grain backs and sides — fewer coats, less sanding
- → Ding and dent repair on finished instruments without re-spraying
- → Rosette channels, binding ledges, and bone nut slots
- → Gluing bone saddle blanks onto tie blocks and heel caps
- → 3D-printed jigs and fixtures — bonds PLA to PETG, ABS to PETG, TPU to TPU
- → Use with GluBoost GluDry accelerator for cure in seconds, not hours
Sponsored: GluBoost is a paid sponsor of the Looth Group. All opinions, shop notes, and swear words are my own. I only work with brands I actually use on real instruments.