Re: Which gun to buy
1) the randomness... did anything touch the coated part? hands, masking tape, anything? contact with pretty much anything gives your part a funky field.
2) you should be grounded fine. turn the kv down as low as possible for second coats (first coat is usually good at around 55kv, and i've heard to hit it with 100kv or as much as the system can handle... i'd keep it to 55 if you're shooting anything with faraday cages), try to keep the gun at about 8" from the part, and adjust the air so you've got a nice cloud without too much velocity. if that doesn't work, bump the pressure up till you get a pretty heavy stream. if that doesn't work try moving the gun closer.
i haven't used that particular gun, but i'm still figuring out tricks with our nordson, usually accidentally. just keep at it and you'll learn how to get it to do what you want it to do. as someone else on here said, "it's not the wand, it's the wizard."
3) if none of that works, the suggestion to shoot hot works. i usually do it with the part at 225. 225 is the magic number for hot flocking for me. just enough heat to let the powder melt on contact, but not overbuild.
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