Ok I ordered some polyurethane primer from Summit Racing. When it came the invoice said that urethane primer was not intended for bare metal, and that I should use epoxy primer first. So I ordered some epoxy primer. I cleaned most of the old Bondo, primer, and paint that was on the parts that I didnít replace with new metal. I didnít remove all of it as it seamed to be in good shape and was nice and straight so I thought what heck. I scuffed all surfaces with 120 grit, cleaned it down with alcohol, and then sprayed the epoxy.
While the primer was still wet I noticed some bubbles along the edge of where the old Bondo and primer stopped. There was some Bondo and primer on the other panels and no bubbles.
I am sure that I did something wrong.
Should I have removed all the old Bondo and primer?
Or should I have used a different cleaner than alcohol?
Should I clean off the old Bondo and prime with epoxy?
What should I use if while working the Bondo I expose bare metal? More epoxy or urethane?
Sorry to be a pain it the A__.
Thanks in advance.