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Hi Pooh Bear, It would be a good idea to add a fan. Heat buildup is the limiting factor in the duty cycle of a welder. I have no idea how much difference it will make, but I'd be interested to find out. There's a typo in your question, I think. A 3/8 electrode would be about the size of a Louisville Slugger (okay, accuracy hawks, that's a joke; don't correct me.) I figure you meant 1/8, right? When you say you haven't exceeded the duty cycle so far, you must mean the true duty cycle of the welder---the one that shuts the welder down when you hit it. How did that amount of time compare to the stated duty cycle? The reason I'm asking is because I recently had to do a small amount of welding at a location where everything about getting power was a problem. A capable 110 machine would have cut the time I spent by about 2/3. But not all house voltage welders are created equal. I bought a low end 110 stick welder at HF once (an Italian made one in a plastic case.) The main problem with it was that it was absolutely worthless, but it was a nice size. What you're describing sounds much better. Stan
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