Best Polyurethane
Gorilla Original Gorilla Glue, 4 oz Bottle
Gorilla
Best polyurethane wood glue. Its case rests on polyurethane works on oily tropical hardwoods w here CA and PVA fail and waterproof bond suitable for outdoor applications. One caveat, expansion creates foam squeeze-out that must be removed before it cures.
- Polyurethane formula (not CA)
- Waterproof
- Expands as it cures
- Works on oily and difficult woods
Pros
- Polyurethane works on oily tropical hardwoods w here CA and PVA fail
- Waterproof bond suitable for outdoor applications
- Expansion during cure fills gaps and creates mechanical interlock
Cons
- Expansion creates foam squeeze-out that must be removed before it cures
- Requires moisture to cure, wood must be dampened before glue application
- Not technically a cyanoacrylate, different application method than CA glues
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