I have a metal CP (Dynamo hinged job) and my current plan is to cut out the top and lay a new piece of metal with new button holes for Seimitsu screw ins and welded on bolts to mount Sanwa sticks . Bondo will be applied to the edges to make it look seemless.
My question is how thick of a metal sheet should I look for? I'd like to be able to cut it with bi-metal hole saws easily as possible yet thick enough to not have much flex (will leave as much as the old metal as possible for stability). I see sheets for sale on websites sold by gauge and by thickness, any suggestions? I'd rather order something online so if you know a good website that'd be great too.