I have some trim lines that I want to fill in that run around the roof line of my '31 Model A. They are about 1/8" deep by 3/4" and have 1/8" holes all the way around. I could weld the holes but it would take weeks so I wanted a filler that I could put in there. The local autobody shop suggested I use Evercoat Poly-Flex:
I'm reading that this is just for skim coating not build-up, any ideas what I could use or if this will be okay??