Jeeeeez, .....where does all this 'stuff' come from??
First off, we can touch up powderpainted surfaces so Yes it can be done. Second, I have had several Model A's in fine-point judging that received no deduction from having a powder painted frame so you can do that too. I actually had one in French Lick with a painted frame get a deduction because the judges thought it was powdercoated. Heck, even an original frame did not have laquer, enamel, or urethane paint on it from the factory so why is it wrong for powder paint but OK for enamel or urethane??
Now here is the low-down on P/C vs. sprayed Paint. The benefit for the sprayer of powder paint is, unlike in the case of 2K paint there is no VOC or Iso's to worry about harming your health. The other thing about P/C is as soon as we coat the item and it has cooled (30 minutes +/-), it is ready to be installed whereas catalyzed paint needs curing time. Now to be fair to all sides here, if you use a cheap spray paint OR a cheap powder paint, it won't last with either type of product. And, common sense tells us that if you spray 2K urethane over a rusted, improperly prepared piece of metal, you are likely going to have a failure just like you will if you do the same with powder paint. I feel fairly certain that for every failure someone can name in powdercoating, someone else can cite an example of failure with sprayed paint!!
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