I have problems when airbrushing. The nozzel is closed before I start to paint and the compressor is on .I open the nozzel slowly and the paint starts to flow but if I stop for a second it won’t work unless I increase the paint flow and increase the psi sometimes I have to open the paint flow almost all the way. The paint is primer gray by badger model flex and I did not dilute it with anything. I always clean the brush well after using. What can this problem?rambo1…
I even soak the brush in alchol after use but not for very long.rambo1…
Rambo,
BadgerModeflex can be thinned slightly more even though thinning is not required (according to Badger). Sounds like it’s drying inside of the airbrush, especially since it is primer which has a slightly more viscous consistency than the other Modeflex paints. Try thinning it an additional 5%.
Also, if you’re using a fine needle, switch over to a medium sized needle. I sprayed an HO Fishbowl bus a few years back with a medium sized needle and got a very smooth finish.
Does it only do it with primer?
It sounds like you might need to thin your paint and maybe even increase your air pressure. The 350 is an external mix, siphon feed gun. You need adequate air pressure to create the venturi to draw the paint up throught the feed tube. In addition the paint needs to be thin enough to be easily drawn up the siphon. The paint should be a little thicker than the consistency of water. I would start with about 30 psi and see how it sprays. You can then adjust the air pressure from there and see how it effects the spray pattern. If at 30 to 35 psi you can’t get it to spray, then I would guess that the paint is too thick and needs to be thinned more.
medina it does it with other paint to all water based badger flex is what I use.rambo1…
also I am using a fine tip.rambo1…
As I said in another thread, http://cs.trains.com/TRCCS/forums/t/9739.aspx?PageIndex=2 , the paint needs to be the consistency of 2% milk, regardless of brand or what Badger claims. I shoot at about 20-25 psi. Use a medium or #3 tip. If you have to use the fine (#1) tip, you’ll have to thin the paint even more.
Now I know my mistakes thanks for the help .rambo1…
Also you might be better soaking the airbrush in windex. Alcohol can turn acrylic paint into rubber.