Got a neighborhood kid that wants me to powder coat some of his traps. The not exceeding 400 degrees is pretty straight forward. I ordered paint that cures 375 @ 18 minutes. Question is for the timing typically to bake 18 minutes at an established internal temp of 375 will take about 1/2 hour. Is there a time limit or point of caution on the amount of time? My powder oven runs about 15 degrees hotter than the thermostat during pre-heat. (Oh, long springs)

Those temps are too close to the tempering draw down temps, remove the springs first.

As wreck some kids traps, try yours first. Some things just don't make sense. Baking at 375 could be one of them. What would he be gaining?