Self etching, Urethane, Epoxy, Filler, so much primers what do I need?

[2_wacko]

I do a lot of small projects that require me to sand the rusty metal to the bare and prime to protect till I put a top coat. There are so many different types of primer, and I need to know what would be the best for what I do.

 

[asphalt]

If you can get to good clean bare metal I would just go with a good 2 part epoxy primer to seal it up.

 

[ryoken]

prob there is, he said small parts, thus that means mixing and loading a gun for every little project...

if the stuff isn't gonna be exposed to outdoors too much, i'd just load em up with some zinc chromate out of a can, then topcoat when needed.... that's all i do, keeps everything from rusting and is THE best raw metal primer you can use... 1/2 the stuff in my garage is in green zinc...

 

[2_wacko]

These projects would be exposed to all kinds of weather. I do not have much cover yet.

 

[ryoken]

pm sent.....

 

[Litho]

Check out DuPont etching primer to cover bare metal. This is what is used in body shops that use DuPont products. You can get it in a spray can for small areas, but when using it be sure to allow ample flash time between coats (follow the directions on the can for temperature and time between coats). PPG also makes really good etching primers for covering bare metal. Also when using an etching primer you want to follow up with a filler primer (which needs to be sanded and blocked out after 2 hours of drying) then followed by a sealer to prevent rust from coming back again. After sealing the filler primer you can then apply base and clear coat. You can purchase these products at your local auto body supply store (in the Seattle area we have Westco).

And also as a good rule of thumb, try not to get etching primer on bondo, it tends to cause solvent popping/pin holes.

 

[American84K5]

pm sent.....

I'd like a PM as well