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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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first attempts tig welding...or, "how to get really fast grinding tungsten"
Ok, so I fired up my Christmas present today, a thermalarc 185TSW tig/stick
welder. First I tried a stick, on DC...wow! So much easier to start and maintain the arc than my AC buzzbox. Very happy. Next I ground a 1.5% lanthinated 3/32" tungsten electrode to a pencil point, then ground the tip flat to about 1/4 the diameter of the rod, put in a #5 pink cone thingy and tried running a bead on a piece of 1/4 mild steel, sanded clean, using a 3/32 filler rod, 115 amps, basic square wave foot pedal operation, and 20CFH flow rate on my argon. A few seconds later I reground a 1.5% 3/32" tungsten....well you get the idea. How in the world do you keep the tungsten tip from touching the work or the filler rod??? Nobody's hand can be *that* steady! Can you rest the pink ceramic cup on the workpiece? How do you hold the torch (angle from vertical) and where do you feed in the rod to the puddle? In front of the torch? to the side? behind it? I accidentally welded a pretty smooth bead, but the next few attempts produced more of the filler rod or tungsten getting stuck to the workpiece. I need a class...Ernie, when is the next welding course in Seattle? Rick |
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