What experience have you guys had with 3.4 oz total fabric on fuselage and tail feathers in a high powered biplane?

Having talked to Kevin Kimball and two others on their (three different) techniques used for double covering, I am convinced the two layers will stay well bonded, but I need to stitch through BOTH layers when using lighter fabrics in a high power airplane to keep from pulling the stitches through. Like anything else, I am sure this will all be clear and simple after the job is done, but I am a neophyte with fabric! Tom -------------- Tom, did you see the yellow and blue model 12 at oshkosh built by Jeremy Mason? I hope you did. That was Jeremy's first ever attempt at building an airplane and the first time he has covered one too. He plans to work the airplane in airshows and lives in canada where temps get low. Here is how it is covered: inboard part of each wing covered with 3.4 oz. Then entire wing covered again stitching thru both layers inboard and only the one layer outboard. 4" tapes in the prop wash on wings, 3" outboard and on tail. Ailerons 3" tapes fuse 3 and 2" tapes as ...  more