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Neil
Taternator


Reged: Jan 19 2003
Loc: Eagle, Idaho
Paint curing - Air dry vs heat lamps
      #6558761 - Wed Mar 30 2011 08:18 PM

Does curing urethane paint with lamps help make the paint any more durable, or is the only benefit faster drying times for production purposes?

I have a set of steel mopar wheels that need painted body color on the outside and was curious if it's worth it to pay a shop to bake them or just let them cure on their own.

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ahy
master


Reged: Jan 22 2007
Loc: IL
Re: Paint curing - Air dry vs heat lamps [Re: Neil]
      #6558831 - Wed Mar 30 2011 08:48 PM

Time and a couple sunny Idaho days should cure it well. The lamps will just speed the process I think. Urethane (two part I assume) gets hard pretty fast so it shouldn't be excessivly tender after 2-3 days of air curing.

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keith airgrabber
enthusiast


Reged: Sep 07 2008
Loc: wisconsin united states
Re: Paint curing - Air dry vs heat lamps [Re: Neil]
      #6559003 - Wed Mar 30 2011 10:00 PM Attachment (87 downloads)

Baking the paint will actually make it die back and not look as glassy. It is better to always let it dry naturally when you can. It will harden the same either way. I am a master painter and painting is my job. When I paint a car at the end of the day. I will let it air dry overnight. Alot nicer results. Baking paint is only for production purposes. So you can paint multiple cars in a day ,instead of just one.

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herkamer
mopar addict


Reged: Oct 15 2005
Loc: Lakewood, Colorado
Re: Paint curing - Air dry vs heat lamps [Re: keith airgrabber]
      #6559009 - Wed Mar 30 2011 10:03 PM

Urethanes dry by 2 different methods. One is solvent evaporation and the other is cross-linking of the catalyzed components. Baking is purely for production. A few sunny warm days will do the trick.

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Matt
69 Dart Swinger 340
99 Dakota R/T
83 W350, Megasquirted with 46RH
and even more


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Neil
Taternator


Reged: Jan 19 2003
Loc: Eagle, Idaho
Re: Paint curing - Air dry vs heat lamps [Re: keith airgrabber]
      #6559018 - Wed Mar 30 2011 10:06 PM

Thanks for the replies.

I'll just paint them myself when it warms up enough. We are in the 50's and 60's, but it keeps getting cloudy and raining every other day. As soon as we get a warm and dry streak going I'll give it a shot.

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RapidRobert
circle track


Reged: Nov 20 2003
Loc: Lincoln Nebraska
Re: Paint curing - Air dry vs heat lamps [Re: keith airgrabber]
      #6559021 - Wed Mar 30 2011 10:07 PM

Quote:

I am a master painter Baking paint is only for production purposes.


Ahhh I always thought the bulbs in a paint booth were to harden the paint & obviously they would dry it faster. Deciding whether to try barbeque grill paint or have some headers chromed. Not so concerned about looks as I am about staving off them rusting out

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live every 24 hour block of time like it's your last day on earth


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hooziewhatsit
Wall Flower


Reged: Oct 05 2007
Loc: State of Jefferson
Re: Paint curing - Air dry vs heat lamps [Re: RapidRobert]
      #6559114 - Wed Mar 30 2011 10:59 PM

All that being said, I've baked a few things now, and they turned out much better than they would air drying. Granted, it is winter, so it would otherwise take a couple weeks to cure

Hopefully my future garage will have room for a $20 craiglist oven so I can bake things and have them done now.

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If you ever find yourself in a fair fight, your tactics suck.


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OzHemi
Smited Grey Menace


Reged: Jan 19 2003
Loc: Garden Grove, CA
Re: Paint curing - Air dry vs heat lamps [Re: Neil]
      #6559124 - Wed Mar 30 2011 11:02 PM

Quote:

We are in the 50's and 60's, but it keeps getting cloudy and raining every other day





Must........resist.........

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Hemi 265's the six to have !

Penguins haunt me.


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elitecustombody
the toyota guy


Reged: Dec 28 2007
Loc: Jacksonville Florida
Re: Paint curing - Air dry vs heat lamps [Re: Neil]
      #6559181 - Wed Mar 30 2011 11:48 PM

Just paint and let them air dry, cooking paint won't make it any more durable

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Stefan B.
1930 Chevy Sedan
1935 Dodge Ratrod
1938 Dodge RC
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1979 Formula
1998 Supra APU 6spd
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RapidRobert
circle track


Reged: Nov 20 2003
Loc: Lincoln Nebraska
Re: Paint curing - Air dry vs heat lamps [Re: elitecustombody]
      #6559194 - Wed Mar 30 2011 11:56 PM

Quote:

Just paint and let them air dry, cooking paint won't make it any more durable


got it and that concept had been entrenched in my brain for decades

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live every 24 hour block of time like it's your last day on earth


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