Can someone tell me what is the correct skin to use for the spars. I need to place my order this week. The plans call for 3/32 mahog. with birch or popular core. I noticed Mark used birch plywood. According to Wicks prices it would be cheaper and I am about cheaper. Finally (I think this was covered some time ago but,) Do I use M90 or M45 ply for the spar skins?
Steven Phillabaum Auburn, Alabama
