Step 7Finishing
iImage Information

After removal of the fully cured frame from the jig, I have cut the excess carbon and I have sanded the entire surface. Also I have bonded the cable stops and then I have sandblasted all the visible aluminum parts. I have added a few layers of wet epoxy, with sanding between each layer. The sanding is the worst part of building the frame, don't do it in your living room... The whole surface was polishing for a better look. But it is better to spray some quality clear varnish over the surface.
forum
just google polystyrene solvent (or whatever type of foam you used) then double-check to make sure that it won't eat your epoxy, too