Hey guys, just a bit of a quick one. In my previous spray jobs I've learned through experience that a priming job hurried is a priming job wasted. Most of my RC models are glassed with 1/2oz or 3/4oz cloth, and according some bright sparks I read you could fill the weave with primer. Anyway to cut a long story short, I found that you'd be a fool to, as acrylic primers shrink and after a few months I had a nice weave showing through my metallic teal pattern ship.

I've since come up with fixes for this, and one of them is to let the primer sit as long as I dare before I cut it back, so I'm not cutting away all the paint before it's had time to shrink.

Now, in the case of DC 540 and other rattle can primers, what's your wait time between laying that stuff down and cutting it back, a day? a week?

I like a week.

If you're concerned about it, use a catalyzed primer like K-36. It doesn't shrink.

Tim,

My experience is K-36 is pretty compatible as far as what you paint over it and it sands very easily. I didn't think it was any heavier than clear dope and zinc sterate or talc.