getting paint to stick

[rikduk]

Hi all, need some info from experience/knowledge,
From my point of view, sandblast is the best way to get paint to stick to steel.
For regular jobs, we usually wipe the steel with rags and thinner to get rid of oïl/dirt.
For non-dippable pièces, is there a better way to prep steel?
I tried some form of acid, spray on steel, then rinse with hose, but its a PITA for big pièces.

thanks
Richard

[tnbndr]

A good cleaning with lacquer thinner or acetone, metal primer (Rustoleum for Rusty Metal) and topcoat. There also is a primer that is an adhesion promotor you could use if you are having issues.
I use the Rusty metal primer even for clean metal,figuring it can't hurt.

[abmetal]

Dupont and Duplicolor have a metal etching primer that seems to work good. I know that some body shops use the Dupont for touch up at times. It's expensive but goes a long way. Duplicolor is not as pricey but also doesn't go as far as the Dupont.

Allen