IF you do it in a oven Put it in there COLD Then turn your oven On to 350 This way there is NO Shock to the gear It all warms up at the same time. Just lay it on a cookie sheet. In Oil is better Use a Old Pan you will no lonnger need to Eat Out of(another Need to USE again) I have also
Heated them On the stove top In a Pan Of Boiling water. AGAIN start out Cold Bring it to a boil for about 20min. But the Oven is the better way.