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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior> How do I prevent dry spray and orange peel?
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Topic Review (Newest First)
05-12-2012 09:26 AM
rusthater89 Just curious, I have limited space and only one work stand so when primed parts flash I try to carefully move them to a spot to dry while I prep the next piece. The primed parts are still soft and despite tryna be careful sometimes I end up nicking it and a small spot gets exposed. Do you guys just touch up with some rattle can primer or do you guys try to mix up some more epoxy for the small touch up?
05-12-2012 09:20 AM
rusthater89
Quote:
Originally Posted by Handfull54
Just remember that if you are painting in your garage to beware of your hot water heater if its in there. As a retired Fire captain I have seen people blown own to the street when those fumes reach their ignition point. Also be sure you have a big enough air compressor. I bought 2 little ones and my paint would be dry in some spots and Ok in others. If your compressor is running all the time it's not keeping up. I bought a 80 gallon 7 hp compressor nd all the problems went away. Just my experience.
I do my primer in my driveway. I will do the final paint in my garage with the floors hosed down, since I'll have more room in my small cramped garage with my car back together. This car is not a restoration, more of a hot rod so I am not concerned with getting paint on every nook and cranny. My compressor keeps up fine, in fact barely turns on when I spray. Thanks for your concern though, that is pretty dumb though to paint near a flame.
05-12-2012 08:29 AM
Handfull54 Just remember that if you are painting in your garage to beware of your hot water heater if its in there. As a retired Fire captain I have seen people blown own to the street when those fumes reach their ignition point. Also be sure you have a big enough air compressor. I bought 2 little ones and my paint would be dry in some spots and Ok in others. If your compressor is running all the time it's not keeping up. I bought a 80 gallon 7 hp compressor nd all the problems went away. Just my experience.
05-12-2012 05:35 AM
novafreek6872 Did a little painting this morning. I probably hold the gun more like 8 or 10 inches away, so I retract my statement. (siphon)

andy
05-11-2012 09:23 PM
rusthater89 I must say that I hold the gun pretty close, closer than 6-8 inches. I move quickly and just keep overlapping. Might just be my gun setting but it seems to work for me.
05-11-2012 06:53 PM
novafreek6872
Quote:
Originally Posted by paint dude
Try and keep your gun 6-8 inches away with a 75% overlap, slow your spray speed down and watch it going on, you can tell if its going on dry or not, you want a nice wet film and the overspray will melt in.
I'm not a pro painter by any stretch of the imagination, but that has got to be too close for a conventional siphon gun. Mine sprays good at a distance of about 12 inches and pressure around 45-50 psi with trigger pulled. Huge fan out too, probably 12 inches easy...not that you need that to paint inner fenders.

I think 6 to 8 on a siphon with that much pressure would guarantee runs

Andy
05-10-2012 11:17 PM
evolvo I'm also a novice painter and had to clean my glasses often. Then I bought a pair of these http://www.uline.com/BL_8952/Goggles, problem solved
05-10-2012 02:07 PM
rusthater89 Thanks for the tips everyone. My other inner fender came out great.

Now I gotta clean my eye glasses off, darn over spray got past my safety glasses.
05-08-2012 09:48 PM
rusthater89 Thanks everyone, I'm gonna do some more primer spraying tomorrow so I'll get more practice.
05-08-2012 09:47 PM
timothale
more light

You need enough light to see what's happening. I used to hold a trouble light in one hand. probably not a good idea with all the flamable fumes . but I rode without a helmet, drank water from a hose, we didn't have seat belts, etc.
05-08-2012 09:22 PM
rusthater89 Thanks paint dude, So I want it to look wet but not have runs.
05-08-2012 09:19 PM
paint dude Try and keep your gun 6-8 inches away with a 75% overlap, slow your spray speed down and watch it going on, you can tell if its going on dry or not, you want a nice wet film and the overspray will melt in.
05-08-2012 05:16 PM
rusthater89
Quote:
Originally Posted by MARTINSR
Yes, it isn't wet enough. The problem, the balance you need to keep to spray it wet enough on something like that without spraying it too wet and getting runs. Overlap is the hardest part. You are spraying all kids of angles and hitting the same spots sometimes over and over, at that point it can get too much applied and run. It is a fine balance to spray something like that all over without doing this.

Brian
Right, Basically I have to maintain good overlap without spraying too much on one spot. So basically when I spray my other inner fender I will try to focus more on overlap to minimize dry spray.
05-08-2012 04:55 PM
MARTINSR Yes, it isn't wet enough. The problem, the balance you need to keep to spray it wet enough on something like that without spraying it too wet and getting runs. Overlap is the hardest part. You are spraying all kids of angles and hitting the same spots sometimes over and over, at that point it can get too much applied and run. It is a fine balance to spray something like that all over without doing this.

Brian
05-08-2012 04:43 PM
rusthater89
Quote:
Originally Posted by MARTINSR
Sounds like it is simply technique. The larger panels where you can keep it wet going across are working out well and the pieces where you need to shoot from different angles to get into spots and what not is causing you to get dry spots.

Pretty hard to give much pointers on this one, you need to pay attention to laying it on the same everywhere and this is easier said than done, it takes practice.

Brian
Yes, I try really hard to spray the inner fenders evenly but the angles are hard to keep with. I especially have a problem spraying the underside of the inner fenders.

Are the dry sprays due to me being to far away from the part I am spraying? Is this also my orange peel?
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