AIRBRUSH TECHNIQUE - LEARN TO AIRBRUSH - View Single Post

fontgeek · 02-08-2008

What kind of paint are you using?
How thick is the paint you are using?
Are you painting in the extreme cold?
What air pressure are you using?

Ideally, you would like to have paint at about the viscosity of skim milk, but that isn't always possible, so you need to increase the air pressure to make the paint atomize/spray.
If you are working with water based paints, then painting in the extreme cold can cause problems too. The water in the paint can freeze up, making your paint hard or like a thick mud.
Make sure your paint is properly reduced with the correct reducer/thinning agent, and that is is well mixed and strained before putting it into your airbrush.
If you are using a siphon feed brush with a bottle or jar mounted below, make sure that the vent hole is free and clear of any obstructions, and that the feeder tube and female receiver on the brush are also clean and clear of any paint or debris before you start. If the bottle doesn't seal tight, then your brush pulls air from around the female receiver rather than pulling paint up through the feeder tube in the bottle itself.
Also make sure your brush is clean before you start, make sure that there is no debris in either the body of the brush, the nozzle, or the needle cap.

All this is general advice, whether it solves your problem or not, I can't tell until I have more information from you.
Good luck!

02-08-2008	#2 (permalink)
fontgeek magazine subscriber Join Date: May 2006 Posts: 437	Re: sputtering brush What kind of paint are you using? How thick is the paint you are using? Are you painting in the extreme cold? What air pressure are you using? Ideally, you would like to have paint at about the viscosity of skim milk, but that isn't always possible, so you need to increase the air pressure to make the paint atomize/spray. If you are working with water based paints, then painting in the extreme cold can cause problems too. The water in the paint can freeze up, making your paint hard or like a thick mud. Make sure your paint is properly reduced with the correct reducer/thinning agent, and that is is well mixed and strained before putting it into your airbrush. If you are using a siphon feed brush with a bottle or jar mounted below, make sure that the vent hole is free and clear of any obstructions, and that the feeder tube and female receiver on the brush are also clean and clear of any paint or debris before you start. If the bottle doesn't seal tight, then your brush pulls air from around the female receiver rather than pulling paint up through the feeder tube in the bottle itself. Also make sure your brush is clean before you start, make sure that there is no debris in either the body of the brush, the nozzle, or the needle cap. All this is general advice, whether it solves your problem or not, I can't tell until I have more information from you. Good luck!