I haven't used the new 'high temp' powder from Eastwood but I got the 'hot shot Jt' kit from them a while back and bought an oven at a yard sale (best $25 I'd spent in a while). I have seen several others use it as well (including a shop or two).
It wasn't as good as the professionally applied powder. However it didn't cost as much either.
This was before they came out with their 'powder primer'. I have access to a sand blaster at work for parts small enough to fit in the oven I have.
It wasn't an issue (on anything I tried) of the powder coming off, just of it not giving as good a finish as expected. My sample of 'almost chrome' wasn't anywhere close (more like 'gunmetal'and the color had streaks in it htat reminded me of hammerite).
However, in all fairness, I didn't shoot that, I gave it to a friend and he used it on several aluminum pieces that were cleaned and not polished to a shine but smoothed with abrasives (he was concerned that if he got it actually shiny the powder wouldn't stick, and he wanted a lower maintenance finish than polished aluminum provides).
It crinckled shortly after it cured, but said friend also mentioned he left the powder out in his car ind it 'froze'. Not sure how you have a problem with a powdered solid at any reasonable temperature (it was winter, but it's not like we're on the dark side of the moon for temps so I dunno??).
I would like to try it again with the new primer they have for it, as I understand it has a 'fill' quality and I've heard (from others) that their 'chrome' is better now.
I'm just throwing this out there as I don't want you to have an unrealistic (by my experience) expectaiton.
Not saying not to use it, as I expect it's a better product now (we bought ours at a trade show before we ever saw it in the catalog).
