I sometimes use Minwax Poly in a rattle can for small parts. The directions say to recoat within 2 hours or wait a minimum of 72 hours, which in my opinion, is ridiculous. I've tried recoating in less than 72 hours, and it usually results in a wrinkled finish. The brush on Minwax Poly has no 72 hour waiting period between coats, and doesn't wrinkle when re-applied in a more reasonable time frame. I'm wondering what it is about the aerosol poly that requires such a long time between coats. I've read that the aerosol is thinned with acetone, while the brush on version is thinned with mineral spirits. Is that what causes the difference? I find it amusing that the aerosol is labeled as "Fast Dryiing Polyurethane" but the recoat time is anything but.
This question is asked more out of curiosity than anything else. I've gotten around the problem by thinning the brush on Poly and spraying these small parts using an air brush. Or, I just spray lacquer.
Can anyone shed some light on this?
Ernie
This question is asked more out of curiosity than anything else. I've gotten around the problem by thinning the brush on Poly and spraying these small parts using an air brush. Or, I just spray lacquer.
Can anyone shed some light on this?
Ernie