HP-CH PROBLEM

[509Raider]

Ok i used my CH n it worked just fine until now...im spraying at 20 psi i turn it all the way to 60 psi n still sprays like 20 psi...what could be wrong... o and the mac valve is open all the way

[lsabourin]

Raider, is this your first go at the AB? It could be that the tip or needle has paint dried on (reffered to as "tip dry"). Clean it off and it will flow again. Get into the habit of cleaning the tip regularly when you paint with a wet tissue, cotton bud, whatever works for you. Other thing is that your nozzle could be full of crap adn clogged. You would have to take the nozzle apart and clean it by soaking or with a very sharp object like a small needle or a guitar string. With this you might be able to push the crap out of there. Do it from the outside-in. Works for me.

L

[509Raider]

well the other day i soaked it up in thinner,cuz i thought it was so dirty but its still the same

[KDSilverBrush]

ya may have an o ring thats bad, or your needle may not be seated correctly, you may also have a very small piece of gunk or paint that may be clogging it up. I use a cleaning kit, small brushes in different sizes, when I clean my ab, just soaking it isn't enough sometimes. Give it a good cleaning, and see if that helps.

[509Raider]

ok thanks il see if it works after i clean it up

[Airbrush Dreams]

Can you tell if the the air pressure comming through the brush actually changes? Eventhough the you change the regulator up to 60 psi you may have something restricting the inflow of air to the brush. If it were cloged paint you would most likly be getting a spitting, or intermitant spitting situation. Make sure your rubber gasket on you air line has not shifted when you atached it to the airbrush I had that happen to a Passche Vl once and it took me a while to figure out that the hole in the gasket was to small on my new hose and would not let enough air into the airbrush which caused exactly what you are discribing. I cut the hole bigger and it solved my problem.

Fred

[Airbrush Dreams]

If not the gasket you may have got paint backed up into air supply, or plunger part of the brush which would also restrict the airflow. if the paint has dried I would suggest disasembling the entier airbrush and soaking it for a day in high quality cleaner made for airbrushes. That way if you need to go to the manufaturer with the AB you can at least say you used their cleaner and it did not work, and it won't come back an bite you in the rear.

Fred

[fontgeek]

I hate to sound like a nag, but you need to clean your airbrush on a real regular basis, like after EVERY time you airbrush.

You need to learn to backflush so that you can back the paint out of your airbrush without having to risk damaging your nozzle. With that having been said, do you get bubbles coming back into the cup when you attempt to spray?
If you unscrew the airvalve from the body of the airbrush, do you get air flowing through the air valve when the tiny button is depressed?
Do you see any paint in the air valve, or in the trigger area on your airbrush itself?
Make sure you don't back the MAC valve out too far, if you do, it lets air out of there instead of forcing it out through the nozzle cap.

[509Raider]

it works now... it waz just really clog up with some acrylic paint, i just soaked it in for a couple hours with some stuff for spray guns....

[KDSilverBrush]

Glad ya got the problem solved, Raider

[fontgeek]

make sure you rinse the brush out thoroughly now, you don't want the cleaner to contaminate the paint you will use.
And make sure to follow a good thorough cleaning routine after every session of airbrushing, that will keep you from having this problem in the future.

[509Raider]

yea i will thanks