Myles1970
Member
- Messages
- 929
- Location
- Monaghan, Ireland
2k epoxy primer is the way to go. A good idea to key any fresh metal before forming into you repair sections as it's often easier when its flat. Personally, I wouldn't bother with the rattle cans as they'll be the weak link in the chain of adhesion when it comes to applying subsequent coatings. Before you decide what to do, have a look at this:-
Sylvester Customs
I too went the way of zinc primer as a temporary fix until I was finished welding with the intention of stripping it off before coating with a 2k epoxy primer. If I was to do it again I would etch it with phosphoric acid until the clean metal has a coppery hue (looks like flashed rust). this protects the underlying metal and provides a `key` for any subsequent coatings to adhere to. There will be differing opinions on this, but at the end of the day its up to you to make an informed judgement
Sylvester Customs
I too went the way of zinc primer as a temporary fix until I was finished welding with the intention of stripping it off before coating with a 2k epoxy primer. If I was to do it again I would etch it with phosphoric acid until the clean metal has a coppery hue (looks like flashed rust). this protects the underlying metal and provides a `key` for any subsequent coatings to adhere to. There will be differing opinions on this, but at the end of the day its up to you to make an informed judgement