Dennis you are correct: the 30 MK I foredeck is cored except the outboard-most inch or two abutting the deck/hull joint (the thickness tapers from 3/4” inboard where cored, to 1/4” outboard where not).
A 5:1 bevel toward centerline from the inboard edge of the hole in my foredeck would extend 4” inboard over cored fiberglass sandwich from that inboard hole edge. Do you recommend beveling that end-grain balsa core, then laying up fiberglass over it? Or should I dig out the core, replace with epoxy, then bevel the epoxy replacement? Thanks, Randy > On Jun 4, 2026, at 1:56 PM, Dennis C. via CnC-List <[email protected]> > wrote: > > First, I think the deck is cored but it does not extend completely to the toe > rail stopping a few inches short. > > Second, what Dave said. First, clean up the two holes a bit. Bevel the > edges to at least 5:1. > > Then lay up some glass on waxed paper with epoxy or vinylester resin about > 3/16-1/4 inch thick, cut it to fit from underneath with at least an inch or > so outside the hole where you can. Epoxy them in place using thickened > epoxy. Maybe apply with a notched trowel to get ridges. > > Then fill and smooth the deck from above. Cut pieces of glass, lay them in > the hole dry, then apply epoxy or resin to the edges of the bevel but not > beyond. Let cure then trim any glass threads around the edges by carefully > sanding. > > Smooth with putty and two part glazing putty. > > -- > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > Please help cover the costs of maintaining this list by making a small > contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All > contributions are greatly appreciated. Please help cover the costs of maintaining this list by making a small contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All contributions are greatly appreciated.
