Wait 24 hours to cure! CURING YOUR WINE GLASSES There are two types of curing methods that can be used with enamel, BAKING  &  AIR DRY  METHOD Bake Method (recommended): Place glasses in a COOL oven.  Set oven temperature to 250 degrees F and bake for 30 minutes.  Glass must heat gradually with the oven to avoid breakage. Do not place glass in a hot oven. After 30 minutes, turn the oven off.  Let glass cool completely about 4 hours in oven. Do not use for 72 hours. Air Dry Method: Air dry for 21 days before use.