anyone here do their own powdercoating at home?

I've done that (run my parts they the oven bare before coating) on about 1/2 of what I have coated so far to date. And on all but 1 or 2 items I've coated those parts hot out of the oven and put them back in.
I do a lot of hot flocking myself. You have to be careful not to get the powder too thick. One advantage of hot flocking is that powder sticks really well on a hot part. So if you have any tight corners that could present a Faraday problem, hot flocking really helps.