: I've noticed that the backside of some of my rolling bevels have gaps. In
: other words, I beveled too much so that the front is tight but there's a
: gap on the inside. Visually this doesn't bother me but I can imagine all
: of the air gaps that will occur when I get to the fiberglass stage.

What air gaps? When you glass the outside of the boat you will get some epoxy soaking into those areas by capillary action, and gravity. When you flip the boat over to glass the inside, after you scrape off the drips you'll find most of those gaps already filled.

So, don't worry about filling those gaps until after you've glassed the outside. They may not even be there.

If they are, then you can fill them, or ignore them. Excess resin from your next glassing operation will fill them for you.

If you use a skim coat of resin to seal the inside wood surfaces before you put on your glass cloth, as you squeegee that on it will fill the cracks almost perfectly. When you put on the glass, you'll have a small amount of resin filling in the rest. Since the outside of the boat is already sheathed in fiberglass, the resin from the interior glassing can't leak out !

When you are done it can be a bit strange to hold the boat over your head and see light through those spaces --but they are filled with plastic. The resin is supposedly 12 times stronger than the wood around it, so just think of those resin-filled "gaps" as strengthening materials.

Hope this helps.

PGJ