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Thinning Enamel Paint


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Old 02-13-2011, 07:54:43 AM
Jim M. Jim M. is offline
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Default Thinning Enamel Paint

Gentlemen, How do you know when a paint is thin enough to use in a spray gun? I want to paint my restored Wisconsin engine with Valspar tractor and implement enamel with hardener from Farm & Fleet. Does this paint generally need to be thinned from the can? I have always used a spray can in the past but this engine is special to me. Thanks for any advice. Jim...
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Old 02-13-2011, 08:24:18 AM
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FarmSC FarmSC is offline
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Default Re: Thinning Enamel paint.

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Originally Posted by Jim M. View Post
Gentlemen, How do you know when a paint is thin enough to use in a spray gun? I want to paint my restored Wisconsin engine with Valspar tractor and implement enamel with hardener from Farm & Fleet. Does this paint generally need to be thinned from the can? I have always used a spray can in the past but this engine is special to me. Thanks for any advice. Jim...
The paint can should tell you, but I always find that 4-2-1 paint,thinner, hardener works most of the time. I have an hvlp can over gun rig from NAPA, runs on about 18-20 lbs air.
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Old 02-13-2011, 10:07:28 AM
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Preston Wells Preston Wells is offline
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Default Re: Thinning Enamel Paint

Farmer is right on the 4-2-1 mix and Ive had success mixing a little thinner at 3-2-1 but you need to take care not to over coat and create runs.
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Old 02-13-2011, 10:07:56 AM
Arlie Levy Arlie Levy is offline
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Default Re: Thinning Enamel paint.

I was told it should be the same thickness as water. my 2 cents
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Old 02-13-2011, 11:37:32 AM
Dave R Dave R is offline
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Default Re: Thinning Enamel paint.

I find that like water is too thin unless you spray very light coats.
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Old 02-13-2011, 01:00:07 PM
John Hanson John Hanson is offline
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Default Re: Thinning Enamel Paint

Every paint is manufactured a little different, so using the same ratio isn't always going to work. There are a bunch of other factors as well, but I don't want to get into all that.
Go to the manufacturer's tech sheets to get the proper mixing instructions and follow them to the letter! When I was handling the tech line for our paints, 99% of the time anyone had a problem, it was because they "already knew" all about mixing the paint and didn't follow the instructions.
If it's not mixed to the ratio that the mfg has tested, you're just setting yourself up for a problem.
John
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Old 02-13-2011, 05:10:50 PM
PTSideshow PTSideshow is offline
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Default Re: Thinning Enamel Paint

Here is a link to some paint tips and a viscosity cup, they work well. And as a previous poster said read and follow the instructions for your band of paint !
classic truck painting tips
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Old 02-13-2011, 05:16:58 PM
Rod Fielder Rod Fielder is offline
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Default Re: Thinning Enamel Paint

the first thing you need is good paint. not valspar from tractor supply. it will dull out in the sun in 1 season. i have tried it several times. it was a great product 10 years ago when it had lead and chromium in it.
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Old 02-20-2011, 11:00:24 PM
IronworkerFXR IronworkerFXR is offline
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Default Re: Thinning Enamel Paint

I use automotive paint such as PPG concept , pretty $$, and you should use their primers. Dupont, or Magnet paint Co has fleet finishes , Proper temp is important, no flame sources, and the hardners contain Isocyonates, good for durability bad for you,Think of cyanide. Use a respirator.
I also put a little flatting agent in the mix to take off the high gloss. If your staying with the valspar thin coats better let the first one really tack up to keep from running and it will take days to get hard , see if they have a Fast reducer , it tacks up faster and you really don't have large surface areas small equipment with a lot corners are always harder to paint, try painting some scrap first.
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Old 02-20-2011, 11:39:26 PM
clappo clappo is offline
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Default Re: Thinning Enamel Paint

Hi I just place the pain in a plastic bowl for 1-2 minutes in the microwave (the one in the shed not inside) and spray it without any thinners easy to apply and less chance of runs.most old cars that were brush painted the paint tin sat in hot water for ease of applying the paint and less brush marks also works well on old engines if you don't want to spray them almost impossible to tell the difference and dries with a nice shine,cheers clappo
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