As an alternative to skinning parts I'm now looking at making covers using resin infusion, however I need to add thickness to my original parts to create the molds.

I know wax sheet it generally the done thing, however I've read about issues with conforming to some shapes and corners, and some of the parts I'll be making have quite sharp corners (which would be fine in a mold but I anticipate issues getting the sheet wax to conform to the shape whilst also maintaining an even depth/thickness).

Has anyone ever used pattern coat to add thickness to a pattern/original part for this purpose?