Powdercoating Motorcycle Frame

[rudolph]

I got a frame done when I was 15, they dipped it is caustic soda or something, I put the bike together and the frame round all the joints went fizzy and white and the paint flaked off and it did it at every joint and seam

[RiderInBlack]

Don't get Brake Cleaner on it Stripped the clear coat and attacked the power coat on my rear rim

[crashalots]

I would have thought that, if the bake oven is set to 200 deg, then thats as hot as any part of any item in the oven is going to get, regardless of size or thickness. I'd also expect the temperature of the oven is fairly closely controlled. Where is the extra 100 deg (that will soften the alloy) is going to come from?

The extra heat? Well think about it. Does the element in your oven glow at the exact temperature that the dial is set to? No. It burns much hotter to account for thermal losses so that the average temp in the oven is equal to the set temp. This means that anything closer to the heating point is going to be hotter than the average. Also Aluminium is has very high thermal conductivity so it soaks it up. Sharp edges and protruding portions are going to draw the heat easier and have a possibility of being slightly hotter. But as you say, the temp of the oven should be closely controlled, but I guess this would depend on the quality of the facilities? Still seems risky