I put mine in the toaster oven and on my oven I have to set it to 450 to get the thermometer to 400. I think you have to be well over 400 to cause problems, so a bit hotter is better than not enough (within reason) I time 10 minutes from the time they look wet. Drop straight into water.
Do a smash test to see if the powder coat is bonded or flakes.
