The biggest issue with powdercoating is losing the temper of the alloy when the wheel is baked to melt and flow the powder.
This can be downright
DANGEROUS if your wheel fails from metal fatigue while under way.
It can be done, but only under strict conditions, conditions not likely found in a commercial operation.
The temp must be precisely controlled, meaning that the oven has to be in top shape so it keeps the temp steady in a narrow range. Also, the wheel must be slowly lowered to room temp. Many shops, due to time pressure, bake too hot and pull the wheels as soon as they have flowed the powder so they can run the next set through and this is what can hurt them.
