Packard Forum Index » Pre-War (1899-1942)

Thanks all. I think I have what I need to move forward.

Plastic body filler (Bondo is a brand name) might not be the best idea on a surface that could flex slightly in use. However, before anything else, they should be sand blasted and given a phosphate coating using something like Ospho. If you need to fill in the ridges, I think that Fiberglas would be a better choice. It’s harder to work with and you need good protection (high quality mask and goggles) but it will give a far better and longer lasting job once done. I know that body filler can have a strengthening in mesh in it but even so it’s just too brittle for this sort of thing.

I ended up returning my Steel Rubber Pads, and went with Metro. The back side forms with the contour of the Running Boards. Less work.