I ordered a couple doors coated with black EDP primer. I was wondering if I can spray 2-Part Urethane Primer over the EDP coating? I have raw steel parts that I am treating with 2-part etch primer and 2-part urethane primer and want to stick with the same primer under the paint. Any help would be appreciated.
Also, is epoxy primer better than applying 2-part etch primer then 2-part urethane primer? I heard the epoxy primer is hard to sand and that is why I went with the etch/urethane system.
Thanks, Michael
