RE: Building a better Viper wing
The next step, if you haven't done it from a previous wing is to make sanding templates.
I include a printout of the airfoil with all of my cores and sheeted wings. I am going to get laser cut templates, but I just got set up with SIG as a manufacturer, and the lead time is several weeks plus I have to get the CAD files together. So we'll do it this way for now.
Our main focus is the leading edge template, but it is easier to just go ahead and lay out all of the templates now, even if you don't cut them until you need them.
Part out a leading edge template, a trailing edge, a top, and a bottom.
Cut out a piece of 1/8" light ply. I suppose you could use 1/8" to 3/16" balsa, and then harden up the edges with CA.
Spray 3M 77 on the ply and on the backs of the templates and put them together. You don't want the paper coming off.
After this dries, I will cut out the leading edge template and start sanding the leading edge to shape.