wood coring question

[SkunkBoat]

Originally Posted by wellcraftv20step

..I was thinking dry ply because I've used it quite a bit and generally it's a very good quality and very stable

Whatever it is coated with will prevent the resin from soaking in and/or bonding. IMO, stick with Marine AB douglas fir.

Where the screw holes will be, use an inch or so of resin/filler and drill thru, so there is no exposed wood.

[wellcraftv20step]

Thanks guys!!

[fixit]

i just re cored my gas tank hatch on my 91 v20... it was 30x32" iirc

i used kiln dried 3/4" fir plywood, exterior grade.

a fair bit of work to cut the core out, grind it smooth, bond ply with Peanutbutter paste, clamped, then three layers of csm over the ply (chamfered the edge with more PB. worked out fantastic! very stiff!