Thread: Gluing pine with a lot of resin

Originally Posted by Wardrop

... I'm also intending to use quite a bit of epoxy on it after the glue-up to fill any knots, timber imperfection, and perhaps more importantly, any gaps between glue joints. I'll do this both sides just as a bit of extra assurance.

Cheers

With respect, this does not make a lot of sense. PVA has minimal gap filling properties, any "gaps between glue joints" means an unglued area, and retr-filling with epoxy is rarely 100% effective. I would suggest either of two approaches:

EITHER: Joint the edges more accurately to eliminate visible gaps, use PVA on both surfaces and clamp securely. [Clean surfaces with solvent and allow to dry before gluing.]

OR: Use epoxy. My methodology would be:

• joint surfaces well,
• wash surfaces with acetone or MEK to remove resin,
• while still wet apply thin coat of epoxy - this aid penetration/bonding,
• thicken epoxy slightly and apply even glue coat,
• assemble and clamp moderately and evenly,
• wait an hour and remove squeeze out.

Rather than using epoxy to fill knot holes and imperfection may I suggest that you drill or route them out and use matching timber plugs or fillets. It will probably look better and be more functional.

Ditto
hope it works and achieves what you want