I may have missed it but I have heard of guys using dishwashers as a lazy way to do it. There is a surplus rifle forum that has an article discussing how to make an "oven" for lack of a better word out of metal trash cans, light bulbs and a rack for the rifle so you can bake it out. Generally for wood, I used the black trash bag and 105 degree temps outside. For metal I have used hot water, hoppes, break free, a steam gun and elbow grease.