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The only variance I’ve found in this is when I’m dealing with different gauges of pipe. Thicker walls mean cutting less and thinner means cutting a little deeper. But half inch pipe to twelve inch, it’s all worked for me.
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Ideally when I’m done I’ll have two of these cuts a hundred and eighty degrees apart. The end of the notched pipe will be divided approximately in thirds. One third top cut, one third uncut, bottom third bottom cut.
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Here’s the way I do it. And it don’t matter what you cut it with either. On small stuff I might use a grinder. On big stuff I’ll use either a torch or a plasma. But the principle is still the same no matter how or where you’re doing a butt joint on pipe and you want to notch or saddle it.
Pull the measurement from the two at their fartherest point here.
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Last Friday night I took a TIG welding class at theTech Shop (1) in Menlo Park. It was the first time I had ever tried welding. I had a blast! It was only an hour long, but we learned the basics of TIG welding. I learned how to weld a butt joint and a corner joint. The instructor, Justin Poulson, was patient, knowledgeable, and skilled.
The Tech Shop offers a lot of classes, ranging from welding, to CNC milling, to industrial sewing. And once you get checked out on the equipment you can use it on your own time for your own projects.
I’m looking forward to taking more classes. Next up: oxy-acetylene welding. Or maybe sewing.
(1) http://www.techshop.ws/take_classes.html
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