Re: Paint question on motor and cowl
No help on this one i guess.
I guess I thought we had it resolved already.
Primer is meant as a bond coat to the metal, plus a substrate for the top coat. Sandable primer is for large flat areas and when you can't do all of the painting in the proper time sequence. No-sand primer is so ideal because you don't have to wait and can get the job done in 2 hours.
ZnCr is a good primer. You don't need a second version on top of it. I don't know where this "light coat" or "dust coat" idea came from. Put 2 coats on 5 minutes apart like the label says. It shouldn't be so thick that it runs, but thick enough that you can't see grey aluminum thru it.
Throw the sandpaper away. Your motor has already been prepared.
Today's paints (acrylic enamels) are sooo improved over years ago. They are formulated with thixotropic agents so runs are greatly reduced. If you get runs its because you are pressing the button while pointing the spray can at the motor, you're overlapping too much, or you're holding the can in one place too long (need to keep the spray moving).
Practice on something else before you try it again.
