Original Posted By: "walter evans"
Keep in mind that the possibility of the applied varnish/polyurethanepulling away from the wood shouldn't be an issue. The strength of the seam,at say, the leading edge is from the bond of the two fabrics to themselves.If you read the Poly Fiber book it explains how the glue doesn't "stick"to dacron polyester . It's the glue reaching through the fabric likefingers, that mechanically lock the fabric together. Thats why the 2"overlap on the leading edge. They tell me thats why Whitmans plane wentdown, the old fashioned dopes etc. that he used, stuck to cotton. But heused those adhesives and procedures on dacron polyester. The seamdelaminated, and they went down.Some people use the presewn "bags" that are just slipped over the wing, andshrunk ( even used on certified aircraft). So in theory you could slip onthe bag, shrink it, seal it, and fly. As far as the fabric being glued to cap strips, some planes like theKolb, use round aluminum tubing for ribs. There is no way fabric can beglued to the round top of tubing, so its just the rib stitching or in Kolbscase, pop rivets that secure the fabric. On my first project I used Minwax quick dry polyurethane and theglues never attacked the poly, even at a glue joint without an overlap,likeat the cockpit, where the fabric just ends at a wood edge. This area getsalot of traffic, climbing in and out.walt-----------------------------------------------------Click here for Free Video!!http://www.gohip.com/freevideo/________ ... __________