Most of the shallow dents I raise with a MonoKote iron from a model airplane hobby store. Brownells carries this same iron. But using a spoon and a gas stove or propane torch is more effective in a shorter time, the most effective I've found. I like to use a piece of old T-shirt just doubled over and so wet it almost drips. Rub the hot iron or spoon on the T-shirt until the sizzling slows down and move the T-shirt to another wet area over the dent. Keep doing this until the dent is flush. Allow it to dry before sanding, a day is fine.