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Old 03-09-2003, 03:51 PM
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Post Toughen up the paint?

I am painting my car frame with Dupont Chromabase, I used the low temp reducer, and put on two coats of silver then two coats of Patriot Blue, and the three coats of Nason 4:1 mix clearcoat. The result is what I wanted, but it seems very fragile. If i just barely bump it, it chips. I have heard that I should have used a Flex additive in the clear to toughen it up. Any thoughts on this? Anyone else have this experience?

MF

<img src="confused.gif" border="0">

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Old 03-09-2003, 04:01 PM
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I spray Dupont and I have the same problem Im not to sure about the Nason clear it is a Dupont product try using PPG it has a harder clear coat
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Old 03-09-2003, 04:21 PM
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COME ON! I have a half gallon of Nason left, and can't afford to pour it down the drain!! Surely there is something I can do to use it?
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Old 03-09-2003, 06:02 PM
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That's a lot of paint. Perhaps if you sanded the clear that's on it now,gave it some flash time for any trapped solvents then sprayed a urethane clear you'd get the durability you're looking for.It's been a long time since I did that much painting. Just my thoughts.
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Old 03-09-2003, 06:05 PM
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universal flex additives are available at good paint stores, i use downriver supply in detroit.
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Old 03-10-2003, 08:44 PM
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The Flex Addititves are not meant to be a long-term fix..they are supposed to be used on urethane bumpers and peices that will have to be twisted and moved around allot during re-installation after a paint job (like a corvette facia, or the rear bumper covers on some of the newer cars). The Flex Additives evaporate out and leave you with the same clear after a period of time. What you need to do is figure out what you did wrong the first time, and fix it. I've used the Nason clears before, and I haven't had any problems with them chipping, but I don't use them much.....I prefer PPGs 2021 or HOK's clear. If you can find a clear that you like, you COULD sand your existing Nason clear to give it a bite, and put a couple of coats of a more 'pliable' clear over the top to resist chipping..but the Nason clear will still be brittle underneath.

The 'hopper
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Old 03-12-2003, 05:33 PM
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What kind of things could I have done wrong? I prepped like I was told, mixed according to directions, and the temp was at least 60 degrees. Any thoughts? <img src="confused.gif" border="0">
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Old 03-13-2003, 06:46 AM
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Hopper; Where'd you get the Roth avatar picture?
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