by Xanadu » Wed Feb 07, 2007 10:28 pm
Clear dope, mixed 50-50 with thinner is the base coat for the entire skeleton of the model.
You need to seal the wood before attaching the tissue, similar to using a primer before paint, and paintng the entire structure with dope is one way, but like others have mentioned a white glue mixture also works.
I apply a good coat of dope to the entire structure and let it dry overnight.
A good sanding follows the next day to get any little edges and mini bals spikes down and flat so the tissue grbs properly and does not rip.
When I am ready to lay the tissue, I cut a piece to the size for the area and put it off to the side.
Then take the thinned dope and apply a coat coat around the edges of the area you want to apply the tissue to.
I then spray with a water mist the piece of tissue, it soaks up the water fast so move quick.
Lay it down on the area you want to do, and gently pul it taut, pressing down slightly along the edges you just doped. When it looks nice and taut, lay a coat of dope on top of the tissue along the edges, and gently rub it in with your finger tip. It acts like a glue for the tissue to the balsa.
When the water drys, the tissue will be pulled drum tight, and hopefuly conform well to the area.
When you have the entire structure done like this, then you give it a coat of thinned dope again to seal the tissue.
Hopefully this gives you a good idea on how its done.
I found the wet tissue method works best for me, and am able to do an entire wing, one side of course, in one piece.
Also do a good portion of a fuselage too with one piece.