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914World.com _ 914World Garage _ OT: paint

Posted by: TimT Jul 22 2005, 07:38 PM

Well I posted previously about using water based colors when painting my cars..

the color coat lays down nicely

I havent figured out how to lay down clear yet... then again its been in the mid 90's here seems like the clear sets before it flows out

Im a total nOOB at painting... here are two of my practice pieces

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Posted by: TimT Jul 22 2005, 07:39 PM

wheel fan

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Posted by: ChrisReale Jul 22 2005, 07:42 PM

Make sure you use some anti-seaze on those puppies when you attach them to your car Looks nice

Posted by: TimT Jul 22 2005, 07:49 PM

Heh, even my "I cant believe they dissect things so intensely" thread here got a "pelican" type response

Im using a HVLP gun with Dupont HC 7600

How wet should this stuff lay down?

it great cleaning the color coats with soap and water..... the only nasty shit is when I shoot the clear

Any hints mis compadres?

Posted by: Red-Beard Jul 22 2005, 09:18 PM

Ship it to Los Panchos?

Posted by: Aaron Cox Jul 22 2005, 09:51 PM

nice wheel fans....

Posted by: 914GT Jul 22 2005, 10:25 PM

Apply the clear early in the day before it gets too hot. Use a high temp activator. Lay a medium wet coat down first, then give it plenty of time to flash before laying down a second wet coat. You can watch the clear as hits the surface and see how it's flowing out. Don't be tempted to go back over it right away, it'll just cause runs or sags.

Posted by: TimT Jul 23 2005, 01:25 PM

What about air pressure?

should I decrease air, and increase paint so it lays down better?

the tech info from dupont recommends 25-35 psi at the gun, so I set the pressure at 30psi...

I guess I need more practice.. Ill shoot the other wheel fans today... they get covered in brake dust after one lap anyhoo

Posted by: TimT Jul 23 2005, 01:28 PM

Oh , I was just reading the info on DuPonts site.. they recommend 6-8psi at the gun cap? I guess I need much less than 30 psi at the gun..

is it just a judgment when the pressure is correct?

http://www.performancecoatings.dupont.com/bowstreet5/webengine/dpc/common/Controller/Action!_pageDispatcher/InnerModel!dpc/modules/Login/OuterModel!dpc/common/Controller/InnerAction!visitorActionp://

Posted by: redshift Jul 23 2005, 01:29 PM

Dropping the pressure a few #s will flow a little smoother, up to a point, then you'll get spatter..

Decrease it a couple, and spray a squirt, and again, and again.. just a hair each time, and find the sweet spot.

Yes, judgement... if DuP says 7-8lbs, and you have been shooting at 30, split the difference, to like 20, and then do as I said above.. you'll find the sweet spot.

M

Posted by: 914GT Jul 23 2005, 02:04 PM

QUOTE (TimT @ Jul 23 2005, 12:25 PM)
the tech info from dupont recommends 25-35 psi at the gun, so I set the pressure at 30psi...

You are setting the pressure with the trigger pulled on the gun aren't you? If not your gun pressure will be set way too low and you'll get lots of orange peel.

Posted by: TimT Jul 23 2005, 06:58 PM

Learning new things every day

dropped the pressure at the gun...

color lays down even more nicely..and the clear just flows and set up...

I love when thing work out

Ill post pics when its all painted...

My friends dont like that blue/ orange combo I have going...

Im trying to give a nod to the Wyer/Gulf cars.... but not be a copycat LOL

Posted by: redshift Jul 23 2005, 08:57 PM

It's a loud looking combo, I like it... HURRY! Take your time.

M

Posted by: TimT Jul 24 2005, 06:54 PM

OK I officially SUCK!!! at spraying clear..

how can I fix this? just kncok it down by color sanding and shoot some more clear?

any of you guys interested in coming to NY and shooting some clear for me? ill cook supply beer etc..

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Posted by: TimT Jul 24 2005, 06:55 PM

ack ack

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Posted by: 914GT Jul 24 2005, 06:57 PM

Looks like fisheyes. Got a filter/trap on your line away from your compressor?

Posted by: TimT Jul 24 2005, 07:05 PM

Yes filter/water seperator at the compessor, and filter/water seperator/ regulator at the gun

this is frustrating because the paint lays down nicely.. I am having real trouble getting the hang of clear..

Posted by: 914GT Jul 24 2005, 07:13 PM

Did you heat dry the water out of the basecoat? Urethane clear will not tolerate any moisture. Otherwise maybe you just didn't spray the clear on heavy enough to flow out. You can wait at least 18-24 hours and sand it down flat then reclear it.

Posted by: Korijo Jul 25 2005, 12:01 AM

QUOTE (TimT @ Jul 23 2005, 04:58 PM)

My friends dont like that blue/ orange combo I have going...

Im trying to give a nod to the Wyer/Gulf cars.... but not be a copycat LOL

i'm paintin' my 914 the same colors !

Posted by: bmcwilli Jul 25 2005, 10:06 AM

can you re-post the link to the water based colors? I lost it.

Posted by: brant Jul 25 2005, 10:14 AM

Tim,

no real advice for you.
I can say we had to shoot our clear 2X when we tried it.
I learned that I'm not good at painting...

but sand it down with 600 and then reclear it.
are you running the right temp of hardner in your clear for your weather?

that made all of the difference for us.
and we made sure we shot it at the time of day to match our hardner.

all I can say is 2nd time was better.. so I hope your 2nd time goes smooth (paint-pun-intended)

brant

Posted by: redshift Jul 25 2005, 10:20 AM

Tim, what is the nature of the texture? Is it little popped bubbles, or a white area of small scaley crap, or is that tiny fisheye?

I see it's rough..

M

Posted by: TimT Jul 25 2005, 10:31 AM

actually is like severe orange peel. Ive nbeen sanding it out

http://www.autoaircolors.com/p://

Posted by: tdgray Jul 25 2005, 10:53 AM

Tim

Are you shooting the clear the same as the paint?

If you are that could certainly account for the problem.

Check the directions again. Make sure that your pressure at the GUN REGULATOR is adequate.

What size needle and nozzle are you using?

That makes a diff also.

From the pic it looks like one of two things. Too much material or not the proper reducer. Check that you are using the proper reducer for very hot temp's

Posted by: redshift Jul 25 2005, 11:02 AM

ChromaClear!

Tim, whats the base? I have used BC/CC a couple times, with ChromaClear.

The clear flowed on like water, and never changed gloss. I shot it with a turbine, clean up, and rub out took no time at all, fact is, that shit is way to hard to cut.

I think the base is suspicious.

Other thoughts:

1. Did you wipe the freshly dried basecoat with any kind of anything?

2. You are laying down 2-3 times the material you should be? (reducer dilema?)

M

Posted by: 914GT Jul 25 2005, 11:14 AM

QUOTE (redshift @ Jul 25 2005, 10:02 AM)
ChromaClear!

Tim, whats the base? I have used BC/CC a couple times, with ChromaClear.

The clear flowed on like water, and never changed gloss. I shot it with a turbine, clean up, and rub out took no time at all, fact is, that shit is way to hard to cut.

I think the base is suspicious.

M

That's what I use too. Needs plenty of air pressure at the gun (HVLP) to properly atomize or you get orange peel. 23psi at the gun means maybe 60 psi or more at the regulator end depending on size/length of hose. Normally I'll crank the pressure up to 100 psi and regulate it at the gun with a cheater valve. The clear sands nice 18 hours after shooting, but gets damn hard after a couple days. I'd have a hard time going water-base. I like to get the whole job done in a few hours with BC/CC.

Posted by: redshift Jul 25 2005, 11:21 AM

I look at that picture, and I see molasses.. just looks thick.

M

Posted by: TimT Jul 25 2005, 07:26 PM

K I feel like the karate kid.... wax on wax off LOL

I knocked down all the orange peel.. and will try to shoot this again when the weather breaks up here... supposed to be almost 100 with 90% RH these next few days

Posted by: TimT Jul 25 2005, 07:36 PM

Miles the base is as smooth as a babies ass..

Im using that water based stuff posted the link before..

I had a friend of mine shoot the clear on another pieces and it looks really nice... the blue looks like you can reach into it and grab a few ice cubes..

I need to learn how to do that