Technical Painting sand blasted metal with Rustoleum - do I need to use their primer?

I sand blasted the steering column and seat frame for my F100 with black beauty and was wanting to spray it with satin black rustoleum. I'd also thought of painting some parts under the hood that I've blasted with it depending on how it turns out. I planned on thinning it 10-15% with acetone and spraying with my HVLP and a 1.5 fluid tip. The can doesn't really specify about using primer, it says it can be painted over bare metal but I am curious if I should still pick up a quart of their primer and shoot my parts with that first?

Thanks,
H.B.

 

IME yes.Rustoleum paint seems to adhere better if you use their primer.

 

I have NOT found any difference..
I do know IF you use the primer,
paint thickness builds up FAST..

 

I've used both ways, prefer a dust coat of their prime, acetone is the way to go, you can use Valspar hardener in the topcoat, helps the durability a lot. Good respirator either way, definately with the hardener.

 

Good suggestion! Thanks, what would the mixing ratio be with the Valspar hardener? Is the 10-15% thinning with acetone about right for the Rustoleum?

Thanks,
H.B.

 

I like the Rustoleum Rusty Metal Primer on freshly blasted metal. You can get it in spray cans. quarts and gallons. That's what I would use.

 

I'd like to know if and how they changed the formula since the early seventies. It seems thin and runs easy these days.

 

Painted a motorcycle gas tank about 5 different times in the 70s, changed my mind about 5 different times, and had a buddy gl***bead it clean each time. When he blasted the gloss red Rustoleum tank with the gold Mr. Zigzag ( should have kept that one ), he asked what kind of paint, cause it was the hardest of any of them to blast off. After that stuff cured for a few months, it was tough as hell.