problem with acrylics and Paasche H

if you have the larger #3 or #5 needle, i would try those and see if you have any better luck. ive never had a #1 for my H, but i would imagine that the pigment in model paint may be a little large for that particular set up. or, maybe thin your paint some more if you dont have the #3. i personally have never had good results using mm acryl but thats just me. there are others on here that swear by them. i have found too that when you thin the paint, lower the psi down atleast under 15 and work it lower until you get it dialed in. i no longer use the H so this may not be good advice. you may have to wait for some real advice. i do know that when i got my iwata hp-c, it had the .3mm n/n and it was very difficult to get the thin line with model paints, then i converted from the .3mm n/n to the larger .4mm n/n and havent looked back. it works great. later.

Yes. The #3 needle is best. I had the same problem. Also use Model Master Acrylic Thinner. This is important. Just add a couple of drops and spray away. If you can, spray at 15 psi. This should solve your problem!

Mike McShea

thanks for the help guys. I would have used my #3 needle but the "cone" has a tiny crack at the tip. I was using rubbing alcohol to thin the paint, which was a custom mixture of 3 MM colors; thanks for the thinner tip Mike. It seemed like i had to spray at a higher pressure to get the paint to atomize. At low pressures it sorta 'separated'. Is it possible it was too thin? gary

Gary,

The Acryl paint seems to flow great for me.
I mix filtered water and isopropyl alcohol in a 50/50 mixture for my thinner.
I then mix the Acryl paint in a 2:1 ratio of paint to thinner and spray it at 20 psi through my Omni 4000 with no problems really.

Mike

Hi Gary, For what it's worth I use an H also and, spray at around 20 to 25lbs pressure. I also thin using rubbing alcohol and denatured alcohol (shelac thinner in the hardware store) 50-50 mix. with no spatter. I've only experimented with the Model Master acrylics, I usually use G-S Hobby Colors. I had good results with the mm paints I tried.
Good luck