I've gotten past the 'make a puddle' stage, moved to fusing two pieces together in a butt weld and have moved to making a 'T' weld (standing on piece of metal at 90^ to the other and welding along the common edge). Couple of questions have arisen:1=2E We are told to tack the work together, then include the tacked section in the final weld. There is no mention of cleaning 'scale' after tacking, but it hasn't been a problem; HOWEVER, when I turn the work over to weld the other side, there is a lot of scale present. How come there wasn't scale in the first case, but there was in the second? 2=2E Visualize a piece of =BD" (or smaller) tubing (.037") to which you need to weld .037" sheet tangent to the tubing (assume the sheet metal is =BD" square). The edge of the sheet metal piece is the only part touching the tubing. Not a problem welding along the outside and only a minor problem welding on the inside. Now, put another piece of sheet parallel to the first and on the other side of the tube. Welding around the outside isn't a problem, but now, how do you get to the inside to finish the weld?
- Thanks in Advance : Mike