Quoted: Followed procedure from previous topics. Heated parts and degreased them, put them (lower receiver apart from upper w/ barrel ) in oven for a preheat. I then took them outside and began. Compressor with a water trap (extra insurance) and regulator set to 35 psi. 8 to 10 inches away from parts when spraying. Lower receiver looks grainy. I ran out of moly while doing the upper half. Oh yes, I used 3 ozs. of product. I should have bought all the colors in gallons with my luck.
I guess now that I get to have the fun time of wiping everything down with acetone.
Any help is greatly appreciated.
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Mine looked a little grainy, too, until I cured it and then put oil on it. Also, how hot did you heat the parts? They simply need to be warm to the touch, not burn-your-hand hot. I just let the rifle set out in the sun for a few minutes before I started... that worked great for me.
One thing to be careful of is how high you have the siphon nozzle on the airbrush. If you have it too high into the air-stream, you'll suck all kinds of extra moly-resin out of the cup and it'll just go into the air. Bring it down until you just have a small pattern and not much overspray. I had the same problem when I was practicing by using water in the cup and spraying some cardboard. I could make it use a TON of liquid if I had the siphon nozzle up too high.
I was able to put 2 coats on my Bushmaster with around 3 ounces of norrell's (filled the 1/2 ounce cup 5 or 6 times), so, IMO, it sounds like you just need to back the nozzle down...
Also, with the airbrush set as I had it, I could hold the nozzle around 4-6 inches from it and never had any runs or thick areas. I didn't waste very much....
Good luck.
Here's my rifle after the basecoat of moly-resin (gray) and some Rustoleum flat black for the pattern.