Re: Question about Orange Peel

Posted by Rod (NH) on July 26, 2005 at 17:52:29 from (64.140.200.138):

In Reply to: Re: Question about Orange Peel posted by Charles Park on July 26, 2005 at 06:30:43:

Well, it depends on the actual paint. I don't know what paint you are using. If it's a synthetic enamel with no directions on the can label I can't help you much. It's been over 40 years since I used any of that stuff. As I remember, you'd put down a fairly light "tack" coat and follow it with a medium to full coat after some period - usually when the surface became a little tacky. But I can't be sure - it's been so long. The modern automotive acrylic enamels and urethanes indicate on the tech sheets about how long to wait between coats. Those are much faster drying paints and the time between coats is typically 15 minutes. That may be too little for the old synthetic enamel. When I use the OMNI MTK acrylic urethane (or even an acrylic enamel), I generally apply a medium coat right off the bat to essentially cover and follow with two other medium coats after the time periods specified in the tech sheet. If you are using a paint without a tech sheet and don't have such information, you'll have to find a decent procedure by trial and error or from someone who uses that type of paint successfully. You should not let the paint dry completely between coats - you will not get good adhesion between coats w/o intermediate sanding if you do. Plus lifting can be a problem with such a practice if a hardener is not used. I know that the terms light or medium or full coats are not very descriptive - it's just something you'll have to learn by doing. Sorry. It's usually a fine line between orange peel and runs and it takes practice to gain confidence with it.

I think Seth (IA) does quite a bit of work in unhardened synthetic enamels. He would be a better one to provide some guidance for spraying that type of paint - if that's what you are using. He may see this and post here or you can start a new topic with his name in it and ask him.

I'm glad you are painting a family tractor. It somehow means a lot more that way. I know just how you feel.

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