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Hey painters ,,how to spray metalic paint

Posted By: dynamite

Hey painters ,,how to spray metalic paint - 12/16/10 04:03 PM

In my job I have done a lot of painting ( boats ),but none of it metalic..I tried it and it sucked...it didn't even look metalic..I was told to spray with the gun on an angle,or less pressure etc..whats the trick ??

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Posted By: screamindriver

Re: Hey painters ,,how to spray metalic paint - 12/16/10 04:26 PM

I don't change the pressure...I spray a few coats using different patterns each time then the last coat gets misted on from a greater distance to even out the metalic particles...
Posted By: Pacnorthcuda

Re: Hey painters ,,how to spray metalic paint - 12/16/10 04:47 PM

you also need to ensure the metallic remains in suspension. Mix well before spraying and spray immediately. A few marbles in the pot (if using a siphon gun), and keep agitating. If using a gravity gun just mix well and spray.
Your base (color) coats should be pretty light, you want very little flowout because the metallic will start to separate from the paint and render a totally unacceptable look. Even rattle cans can show this 'effect'.
Posted By: dynamite

Re: Hey painters ,,how to spray metalic paint - 12/16/10 05:28 PM

Soooo ---what kind of pressure shuld I use with a gravity gun ????

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Posted By: Pacnorthcuda

Re: Hey painters ,,how to spray metalic paint - 12/16/10 05:39 PM

Quote:

Soooo ---what kind of pressure shuld I use with a gravity gun ????



Assuming a Conventional gun (not HVLP) I would experiementing with 40-50psi
Posted By: Pyper70

Re: Hey painters ,,how to spray metalic paint - 12/16/10 06:12 PM

Quote:

Quote:

Soooo ---what kind of pressure shuld I use with a gravity gun ????



Assuming a Conventional gun (not HVLP) I would experiementing with 40-50psi



Isn't Gravity considered HVLP?

I run a Devilbiss FinishLine 3 (obsolete now) I am by no means a painter, but when I sprayed my car with PPG (I jambed three cars with Metallic paint)...I had 22psi at the gun. Having a regulator on the gun at the inlet is imperative...if you have it a regulator at the compressor you don't know for sure the loss you can incur because of the length on the air hose.
Posted By: Pacnorthcuda

Re: Hey painters ,,how to spray metalic paint - 12/16/10 06:20 PM

Quote:

Quote:

Quote:

Soooo ---what kind of pressure shuld I use with a gravity gun ????



Assuming a Conventional gun (not HVLP) I would experiementing with 40-50psi



Isn't Gravity considered HVLP?

I run a Devilbiss FinishLine 3 (obsolete now) I am by no means a painter, but when I sprayed my car with PPG (I jambed three cars with Metallic paint)...I had 22psi at the gun. Having a regulator on the gun at the inlet is imperative...if you have it a regulator at the compressor you don't know for sure the loss you can incur because of the length on the air hose.



No, gravity can be either HVLP or Conventional. Depends on tip/air-cap/needle design.
Posted By: CUUDAK

Re: Hey painters ,,how to spray metalic paint - 12/16/10 06:21 PM

Quote:

In my job I have done a lot of painting ( boats ),but none of it metalic..I tried it and it sucked...it didn't even look metalic..I was told to spray with the gun on an angle,or less pressure etc..whats the trick ??



There are a lot of factors involved!! What paint/reducer/clear/hardener are you using? What gun are you using, is your compressor large enough??

I am a professional painter, I use a Satajet 2000 HVLP gun(German). 20Lbs at the gun and 10Lbs at the cap. Adjust the fan to about 10"s wide and stay at a distance about 10"s from the panel. Remember, 50% overlap on each pass. NEVER hold the gun at an angle! Never arch the gun to lt-rt! That is what we painters refer to as HEALING the gun. Keep the gun at 90 degrees to the panel at all times. Use the correct reducer/hardener for the ambient temp outside. You may want to go to youtube and look for some vids on how to apply automotive paint. Its hard to explain by typing!
Good luck!

Here is a shot of my truck I painted,

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Posted By: 4BBodies

Re: Hey painters ,,how to spray metalic paint - 12/18/10 08:35 PM


What Cuudak said is spot on, also...........you still haven't mentioned if you are using single stage or base/clear? Two completely different animals........with single stage, you apply the paint (as suggested by Cuudak) being very consistant, then I usually dust a coat over the hood/trunk RIGHT after the last coat to even out the metallic. The sides too, depending on how they look. With base coat.........well, base coat is so easy you can almost apply it while watching TV, just dust the final color coats then check for mottling. If you have a gun that you are used to use it, if not get a more modern one. They shoot better. Just my
Posted By: Mr T2U

Re: Hey painters ,,how to spray metalic paint - 12/18/10 09:05 PM

if you are spraying base coat you might want to be careful when you "DUST" the last coat. some base coats when they are sprayed on to dry the clear coat will fall off.
when spraying single stage make sure you "DUST" the paint over wet paint. if the paint being dusted is to dry will give you excessive orange peel.
Posted By: elitecustombody

Re: Hey painters ,,how to spray metalic paint - 12/18/10 10:22 PM

I own a shop and spray on regular basis,I like using slow reducer and very slow hardener when shooting any type of paint,metallic or solid color,base/clear or single stage.It allows a much better flow out and nice smooth finish,most paint nowadays have flop control additive ,it controls ther metallics helping to get them to be more stable without mottling and blotching.It's been a long time since I had metallic control issues,

when spraying metallics,first coat 50% overlap,25% on following coat(s) ,every coat must be sprayed in X in relation to previous coat,that means if you shot the hood in front to back strokes,next coat must be done in left to right,
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