Thanks to everyone for the quick replies!
I should have said I’ve been “powder coating and tying my own jigs” not “making.” I actually buy most all of my unpainted heads from FishingSkirts/Boss Outdoors. That being said, I’ll try and address some of the comments in hopes to clarify my process and the tool I use. Maybe that will throw up some red flags for you folks.
#1 I’ve never cleaned the heads before painting them. Honestly never even thought about it. Possibly a rookie mistake. I don’t wear latex gloves when handling them. Typically, I am wearing a mechanic style glove on the hand I hold the hook with as I heat the head.
#2 I use a Wagner brand heat gun that I bought from Lowe’s as my heat source to heat the heads before dipping them in the fluid bed.
#3 I’m not sure how old is too old for powder. I’d say my white is about 8 months or so old. I don’t paint a ton of heads so some colors last me a while. But I do keep the lid screwed on tight when not using.
#4 After dipping the heads in the fluid bed, and letting them cool off, I usually take them straight to the toaster oven. They do touch my bare hands but I wouldn’t say my hands are ever dirty when handling them.
#5 As for other colors, I’ve seen that same discoloration on other lighter colors. But the white is always the most noticeable. Probably just because it’s white.
All that being said, I took a pic of the rack on my old toaster oven because I wanted you to see what it started to look like over time. You’ll see the discoloration or whatever it is in the pictures. But I should tell you that it doesn’t look that bad because I’ve tried to clean it off with a wire brush. Also, remember that I purchased a new toaster over thinking that would temporarily fix the problem, but after my first batch of white heads IN THE NEW OVEN, several (but not all) of them had that discoloration on them. Needless to say, it’s driving me crazy. Thanks for being o kind and trying to help me.