Hi Guys,
I've finished building a balsa P-38 and I used .6 oz. glass cloth and epoxy to lay the cloth on. I'm ready to prim the model and plan on using Varathane, Polyurethane-water based clear-fast drying, and want to use talcum powder with the Polyurethane, to fill in the weave. How much talcum powder do you add to the Polurethane...? I already have the Polyurethane and want to get my model ready for the color coat.

Any advice will be nice...

Soft Landings Always,
Bobby of Maui