So I got these little holes all over my cars roof and quarter panels and I was planning to fill them with Rage Gold and then use some sealant (any sugestions?) and then sand. I was wondering if I would need to use a backing even with holes this small??

 

Of course the best option would be to weld them, but if that's not a option I would at least fill the hole with kitty hair fiberglass filler.

 

I would just weld them shut, grind, kitty hair

 

Take off your headliner hold a chunk of copper to the hole from the inside and weld shut.

Dont just stuff filler into the holes...