Quote:
Originally Posted by wrndln
I have been using PPG K36 for my sanding primer so far. It is a little pricey and doesn't seem to build all that well - filling 80 grit sanding scratches. It does sand nice. I was thinking of going to Evercoat FeatherFill after I seal the metal with PPG DPxx. Does this sound OK to do? So far I have stayed strictly with PPG products - DPxx, K36 and Concept for fear of compatibility problems. I would seal the FeatherFill with DPxx before applying the finish coat. If you have done this or know if it is or isn't OK, please post a response.
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After reading Marco and Brents Good and very informative posts I figured I probably needed to say a little more, so as not to give anybody the wrong impression. While Feather Fill is the best high build sprayable primer that I have used, It may well not be the best there is. As with any Primer, I would never spray over 40 grit sand scratches, that is just what the lable implies it is capable of and I don't doubt it.
I have been retired from the paint and body shop business for a few years. When in business I used Sherwin Williams paint products on the cars and Kirker on the Mack trucks. Sherwin Williams required that you use all of their products as recommended to be in the lifetime warranty program. We didn't mix and match brands. Now that I am retired I only work on my own cars. and I can use what ever product that I choose.
I feel that Feather Fill is a good product for the home restorer or anybody else for that matter. As with any product it is always best to follow the manufacturers lable or data sheet instructions. Its best not to pile any paint product on too heavy or problems will follow. Thinning does help, especially on the final coat to help flow and smoothness. I have used Feather Fill over etching primers and it could be used over epoxy primer. I have had no problems with the product being porus, I guess I must have used it correctly. anything is possible as far as problems with any product if not used as directed.
I use an inexpensive gravity feed gun that I bought from Smart Shopper for heavy primers, it uses a 1.8 tip and does the job quiet well. I wouldn't want to use an expensive gun with Feather Fill or any high build primer for fear of clogging and ruining the gun. It is best to spray good grade lacquer thinner through the gun between coats or the gun will probably stop up in the waiting period between coats.
You can top coat Feather Fill with Lacquer, enamel or urethane with good results. Anybody that has ever sprayed acrylic lacquer knows that it doesn't fill anything greater than maybe 320 sand scratches. I have used acrylic lacquer and urethane enamel over Featherfill with good results. Opinions of course vary.