by jack lee » Sun Nov 07, 2010 6:27 am
Tissue covering is an art by itself. After reading and looking at a lot of Sciggs 30 samples and instructions I've settled on using 50-50 Elmers glue and water mix to fix the tissue to the balsa. I use a small paint brush. After it dries I spray the tissue with water with a light mister and let it dry completely. This usually removes the worst wrinkles. Then I brush on 50-50 Dope and thinner...three coats. I'll be posting the results of this process on my Stearman PT-17 soon.
I've also experimented with using just the Dope and Thinner to attach the tissue. This requires first brushing the Balsa with three coats of the 50-50 Dope mix and letting them dry before attaching the tissue. I like it because it comes out much smoother. I'm still experimenting. Weight is not a consideration for me right now because I don't build to fly...just static.
Cutting and trimming the tissue is a slow and careful process. I've started cutting "angle slits" in the curved areas of the wing. It helps but I still get some wrinkles.
Mainly, I find it best to keep trying different techniques...I cut off and remove any really terrible areas and re-apply the tissue. I think of this as practice for making repairs after a crash when I try flying.
The main thing for me, though, is to enjoy the process, finish the model I'm working on, and do it better on the next one.