Deck fittings
Tony, As I read what you've written, I take it to mean that you'll remove the hardware and then drill out the holes to a larger size and then fill these oversized holes with epoxy so you can then re-drill the appropriate smaller sized hole for the hardware to be re-inserted into. Sorry about the wordiness, but if that's what you intend to do that would not be the correct way of doing it. The better way is to insert a bent "L" shaped piece of nail into a drill chuck and route out some of the wood core around the hole. Say you've got a i/4" hole, you'd route out say a 1/2"-5/8" of core material. You'll probably have to incremently step up the "L" shaped tools so you'll have room to get them inserted, starting with the smaller one and working up. Next, cover over the hole in the cabin with a tongue depressor wrapped in plastic or waxed paper and duct tape it over the hole. Now you can use a plastic syringe loaded with stucturally thickened epoxy (milled fibers) and fill the hole all around, over fill to help remove air, Wipe off excess, let cure,and drill new hole, x however many holes you're doing. This technique usually works easier with balsa core or soft or rotten core. It may be a little more difficult with good and dry plywood core. Good luck.