I need to do some filling of an edge which is rough (nomex honeycomb). Outer surfaces are CF. Structure is an annulus. I need it to be lightweight. I was thinking of Red Devil lightweight spackling to fill the voids then covering it with 1oz glass with epoxy. Any thoughts on this combo? tnx jtm RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]