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Bad Paint Atomization

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  • Member since
    January 2015
Posted by Moff on Wednesday, February 17, 2016 7:44 AM

Greg

 Next comes dry tip as mentioned above.

 

I recently bought some Vallejo Drying Retarder if you're curious.

"Gaiety is the most outstanding feature of the Soviet Union." - Josef Stalin 

  • Member since
    April 2007
  • From: Canada
Posted by JTRACING on Saturday, February 13, 2016 4:58 PM

Could be a bad paint, try it with a different brand of paint and see if you have the problem 

  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Friday, February 12, 2016 3:41 PM

Moff

Ok, I found the instruction manual. It's a little vague, but I'm pretty sure the needle/nozzle size is 0.38mm. 

 

I think .38mm is right, it's what I found too.

Reason I ask is as much as I like Vallejo acryls (and I use them primarily), I do not believe they have the finest pigments in the world, and IMO, although I read of folks shooting it through tiny detail needle/nozzles, anything less then .35mm might be tricky.

That said, you should be fine at .38mm and that shoots down my first guess at your spurting problem. Next comes dry tip as mentioned above.

  • Member since
    January 2015
Posted by Moff on Friday, February 12, 2016 10:15 AM

Ok, I found the instruction manual. It's a little vague, but I'm pretty sure the needle/nozzle size is 0.38mm. 

"Gaiety is the most outstanding feature of the Soviet Union." - Josef Stalin 

  • Member since
    January 2015
Posted by Moff on Friday, February 12, 2016 10:07 AM

Greg

What size needle/nozzle are you spraying through?

 

Hmmm, I don't know where I put the manual that came with the AB. It's whatever size comes out of the box with a Paasche Talon TG#2L.

"Gaiety is the most outstanding feature of the Soviet Union." - Josef Stalin 

  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Thursday, February 11, 2016 11:35 AM

What size needle/nozzle are you spraying through?

  • Member since
    April 2008
  • From: Fox Lake, Il., USA
Posted by spiralcity on Thursday, February 11, 2016 10:46 AM

You may want to read this article and see if you can pick up some tips on how ti fix your problem.

 

http://www.vivilon.com/instruction-005.html

 

 

  • Member since
    August 2012
Posted by JMorgan on Tuesday, February 9, 2016 3:33 AM

air pressure too low can cause poor atomization

  • Member since
    January 2015
Posted by Moff on Monday, November 9, 2015 8:08 PM

I decided to just clean the whole airbrush, as it didn't make sense to do part of it.

"Gaiety is the most outstanding feature of the Soviet Union." - Josef Stalin 

  • Member since
    January 2015
Posted by Moff on Monday, November 9, 2015 7:54 PM

Tojo72

I recently started using Vallejo 71.262 Airbrush Flow Improver,and it has made a diffrence for me.

Why you have to doctor up their paint with additives to work is beyond me,but it does seem to work.

 

 

I've been considering getting some of that, but I wasn't sure how useful it would be. I'll pick some up, thanks for the advice!

"Gaiety is the most outstanding feature of the Soviet Union." - Josef Stalin 

  • Member since
    January 2015
Posted by Moff on Monday, November 9, 2015 7:52 PM

Don Stauffer

How big are the flecks?  Spraying fast drying paints from too great a distance can cause a rough surface due to paint particles drying before hitting the surface. If the flecks are about the size of the grit in coarse to medium sandpaper- say 120 or 150 grit- this could be the problem.

 

 

This is not a drying problem, it's more of an atomization problem. The paint is landing wet, it's just really bad atomization. The spray is not consistent or small enough, I could get better atomization with a spray bottle.

"Gaiety is the most outstanding feature of the Soviet Union." - Josef Stalin 

  • Member since
    March 2003
  • From: Western North Carolina
Posted by Tojo72 on Monday, November 9, 2015 6:38 PM

I recently started using Vallejo 71.262 Airbrush Flow Improver,and it has made a diffrence for me.

Why you have to doctor up their paint with additives to work is beyond me,but it does seem to work.

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Monday, November 9, 2015 9:01 AM

How big are the flecks?  Spraying fast drying paints from too great a distance can cause a rough surface due to paint particles drying before hitting the surface. If the flecks are about the size of the grit in coarse to medium sandpaper- say 120 or 150 grit- this could be the problem.

Don Stauffer in Minnesota

  • Member since
    January 2015
Posted by Moff on Sunday, November 8, 2015 9:28 PM

Yes, this definitely happened despite the cleaning of the needle tip during painting. I'm going to do a quick clean of the nozzle and stuff tomorrow (I'll save the real deep clean for next weekend), and I'll see if that helps. I really need to get around to buying an ultrasonic cleaner and a real airbrush holder. 

"Gaiety is the most outstanding feature of the Soviet Union." - Josef Stalin 

  • Member since
    August 2012
Posted by AndrewW on Sunday, November 8, 2015 8:01 PM

I use Vallejo model air for all my color coats, and it chokes up a nozzle so fast, even thinned.  I thin 30 to 75 percent, depending on which layer I'm working on, and have to wipe my needle tip constantly, even with a 0.4mm nozzle.   So, I would start with a cleaning and at the same time look for a bent needle or cracked nozzle.  

I am using an H S infinity, normally a 0.2 mm nozzle, I just keep thinner or water and q tips at hand during paint.  I use Vallejo airbrush cleaner first and an ultrasonic bath second when I clean. 

Hope that helps.

Life is hard, it's even harder when you're stupid - John Wayne.


  • Member since
    January 2015
Bad Paint Atomization
Posted by Moff on Sunday, November 8, 2015 7:44 PM

Does anyone know what would cause bad paint atomization? I'm getting uneven coverage and flecks of paint that look like I was flicking a paintbrush. I've tried it with neat Vallejo Model Air and thinned Model Air at different pressures, so thinning or pressure probably isn't the problem. I'm guessing it's probably just because it needs a clean, but I wanted to run it past you guys. Luckily I've repainted, and I've only been doing priming and a basecoat since this problem started.

"Gaiety is the most outstanding feature of the Soviet Union." - Josef Stalin 

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