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Post by jeffmasengale on Jun 7, 2018 12:34:59 GMT -5
I need a little help. I stripped four 1:18 die cast cars, a 2004 Rice, and a 1993 Tracy, 2001 Cheever and a 94 Unser.
I cleaned them, wet sanded them, cleaned again using steel wool , washed them and then shot them with Krylon
Self Etching Primer.
About 2 hours later, I checked to be sure the Self Etching was dry, then I put a coat of white Krylon Universal
Bonding Primer on them. Three of the cars dried within a half hour. The Rice car dried in some areas, but looked
like it had a coat of oil under the paint. After sitting the entire night, and it still wasn't dry, I stripped the paint off it,
cleaned it, sanded, washed again , Self Etched it again, and shot anther coat of White primer.
Same oil like look, some areas are dry and other not. Any ideas whats going on and how to fix?
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Post by racermagic on Jun 7, 2018 19:54:57 GMT -5
Sounds like the Rice car isn't getting clean enough for adhesion. Soak in some laquer thinner? Perhaps some vinegar?
The other 3 are good. Its not the primer.
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Post by drums01 on Jun 7, 2018 21:31:55 GMT -5
Right on Racermagic.... The proof is in the primer (the other three tell you its good); follow his recommendations and it SHOULD come out fine the next time...
Only one time EVER out of hundreds of builds did I find a cast metal with foreign bodies in it that prevented a proper adhesion.
Our local hot shoe is spot on with the fix....
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AJ
Podium Finisher
I live in a world of bright reds, oranges, and yellows!
Posts: 362
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Post by AJ on Jun 8, 2018 9:21:33 GMT -5
one trick i have learned through very painful failures is that rubbing the cars down with nail polish after stripping them helps alot.
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Post by flashman on Jun 8, 2018 9:31:09 GMT -5
one trick i have learned through very painful failures is that rubbing the cars down with nail polish after stripping them helps alot. Did you mean nail polish remover? Or are you saying to apply some kind of nail polish? More details of what you mean would be appreciated.  I have a batch of old Solido 1/43 pre-painted diecasts that I plan to strip the factory paint from and restore, so this topic is of interest for me. Cameron |
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AJ
Podium Finisher
I live in a world of bright reds, oranges, and yellows!
Posts: 362
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Post by AJ on Jun 8, 2018 9:42:17 GMT -5
nail polish remover.... to much sugar in the blood stream..... i use ONYX 100% pure acetone nail polish remover.
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Post by jeffmasengale on Jun 8, 2018 10:44:14 GMT -5
Thanks. I tried the vinegar trick, (I didn't have nail polish remover), and it worked. I done about 20 cars the same way and never had this problem. My first thought was it wasn't clean enough, but when the same thing happened a second time to the car, I got worried.
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Post by flashman on Jun 8, 2018 13:20:57 GMT -5
nail polish remover.... i use ONYX 100% pure acetone nail polish remover. I have a quart can of Duplicolor 100% Acetone Lacquer Thinner that I got from a local auto parts store for about $10. I'll have to try that when I get to that stage. Thanks much for the info! Cameron |
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robh
Race Winner
Posts: 526
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Post by robh on Jun 8, 2018 20:48:09 GMT -5
Good info in this thread.
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