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#1
05-09-2005, 02:30 PM
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Primer Cracking
Okay, does primer usually "crack"? I did a quick light coat for the first coat, let it dry over night. It looked like it was cracking around the rear bumper. Sanded it out a bit, washed it off and let it dry for 24hrs. Next day I brushed it off and blew it off just to make sure. Went out and did a heavier "cover" coat. Got some more cracks on it. Is that normal? Will I be able to just kinda sand them out and hide that in the final coats?
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Current Model: Ferrari F50 
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#2
05-09-2005, 02:45 PM
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I learned something the other day...
I stripped the paint off a body with CSC and the only place the primer really stuck was on the places I had done body work (filled and sanded). So, on my next project I sanded the body with some very fine sandpaper (1600) before priming. Your problem may be due to mold release left on the body or even due to body oils from handling the parts before painting. You've already tried to re-coat the parts, so stripping or sanding to bare plastic is the only thing I would try. 
__________________
SCCA 7, The lost Z Contest entry thread: Mystery? Beetle + Boxster = Bugster, P.T. Panel:click here Diablo Roadster: click here, & Porsche C2 Cab
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#4
05-09-2005, 03:19 PM
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Well, I did sad with wet 800, then 1200 paper before the first coat. When I was handling the car, I only held it from the inside. That's kinda weird!? Maybe my primer is just no good
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Current Model: Ferrari F50
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#5
05-09-2005, 03:41 PM
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Re: Primer Cracking
Maybe the first coat was too tick.
what brand of primer do you use ?
__________________
 CarsModeling.com. My Scale Model Cars blog.
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#6
05-09-2005, 03:59 PM
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It's a company called midwest http://www2.towerhobbies.com/cgi-bin...&I=LXAU99&P=ML
__________________
Current Model: Ferrari F50
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#7
05-09-2005, 04:22 PM
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Re: Primer Cracking
hi!
why don't you try this insted from teh same place http://www2.towerhobbies.com/cgi-bin...?&I=LXVC46&P=7 either in grey or white. I've found tamiya primers to be excellent so far. I'm not sure how the $/oz compares (couldn't do teh math  ) but they've worked every time for me so far.$0.02 worth stevenski
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#8
05-09-2005, 04:48 PM
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I will try that. Those are what I wanted to buy, but their out of stock until at least mid-may because of the whole labeling problem
__________________
Current Model: Ferrari F50
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#9
05-09-2005, 05:08 PM
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Re: Primer Cracking
oops sorry - I'm in Europe and we don't have that problem (yet). I read about about it but didn't think before I posted - STUUUUUUUUPID of me
 sorry 4 that stevenski
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#12
05-10-2005, 12:53 PM
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Re: Primer Cracking
I suspect its the weather thats causing the cracks on your primer. Check the level of humidity in your area, make sure you don't spray on days with high humidity.
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#13
05-10-2005, 01:06 PM
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Re: Primer Cracking
i live in texas and the humimidity is always high. lol. i swear by duplicolor primers. i have yet to have any trouble out of them. as long as the body is properly prepped. 4 bucks for a 11 oz can
__________________
My name is Russell, feel free to use it. I'd rather be hated for Who I Am than be loved for Who I Am Not
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