During the past few years, I have been heating the shop with a couple of whimpy space heaters. You know, the kind you might have by your feet next to your favorite reading chair. Needless to say, that style of heater was pretty ineffective in the shop. I would hover next to the one on my bench, trying to thaw my fingers. This weekend, a friend let me borrow a real heater. Whoa. What a difference. This heater runs on diesel fuel and cranks out the warmth. Just a few minutes on and the shop feels terrific. Couple this with the forge running and I can pretty much work in shirt sleeves no matter what the temperature is outside.