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-   -   Enamel Crinkle (http://www.oldrocketforum.com/showthread.php?t=13044)

wz2p7j 10-23-2013 02:39 PM

Enamel Crinkle
 
I just airbrushed a rocket with enamel but one of the fins came out crinkly for some reason. I dutifully wet sanded that spot smooth and shot the rocket again. Still crinkly in that same spot. What gives? Seems I've read about this somewhere but can't remember.

Thanks, Chris

foamy 10-23-2013 03:31 PM

I just had the same problem with the crinkling in a few spots. Sanded and shot it again with the same result.

I then sanded all the original primer off the troubled spots, waited a couple of days and re-shot with primer on only those spots and had success.

I'm thinking (always a problem) that certain areas (of paint) were thicker and didn't cure as well or quickly as other areas. I now wait at least a few days before I spray additonal coats. If I can still smell it—I wait until I can't. I don't know if this is part of the problem, but I've only had those troubles when I've mixed brands of paint and been impatient to spray.

chrism 10-23-2013 07:27 PM

Quote:
Originally Posted by wz2p7j
I just airbrushed a rocket with enamel but one of the fins came out crinkly for some reason. I dutifully wet sanded that spot smooth and shot the rocket again. Still crinkly in that same spot. What gives? Seems I've read about this somewhere but can't remember.

Thanks, Chris



What brand of paint did you use?

scsager 10-23-2013 10:16 PM

Quote:
Originally Posted by wz2p7j
I just airbrushed a rocket with enamel but one of the fins came out crinkly for some reason. I dutifully wet sanded that spot smooth and shot the rocket again. Still crinkly in that same spot. What gives? Seems I've read about this somewhere but can't remember.

Thanks, Chris


Heh - Me - 3.

Same thing happened to me yesterday. Clearly a surface issue. Contamination or some issue with that spot, because it happened again in the same spot.

I had to sand down to bare wood fin, re- prime, and then the color coat was Ok. Part of my issue (I think) relates to wanting to cover too quickly. I get better results with many thin coats, but I struggle with having the patients to do it right.

wz2p7j 10-24-2013 03:00 PM

Thanks guys. I'll try sanding that spot down further and re-prime and re-paint. I'm using Testors paints, by the way.

Chris

wz2p7j 11-02-2013 04:17 PM

Just to close this out I sanded the area down quite a bit more this time (not quite to the balsa, though) and re-primed and re-painted with satisfactory results.

Chris


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