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Text File | 1990-11-17 | 2.8 KB | 411 lines

text 5 2 145 29 PRACTICE #3~ text 1 12 308 184 Clamp a fresh section of tubing in the vise and again set the regulators to 5 psi each, put on your goggles and light a flame. Pick up a 3/32" welding rod in your left hand. Heat up a small area about 1" from the right hand edge of the steel tube. Keep an end of the welding rod close to the hot spot of the tube, but don't touch it. The idea is to warm up the welding rod, but not melt it yet. Watch the steel tubing carefully. You'll see it turn red, then sweat, finally the surface, perhaps a 1/4" diameter area, will melt. This is when you bring the rod into action. Put an ~ text 328 15 638 88 end of the rod into the puddle of steel, and it will melt, adding to the puddle. As this happens, slowly progress to the left. As the left side of the puddle melts, the right side will solidify. Melt more of the welding rod into the puddle. ~ line 336 134 597 134 line 337 161 599 161 ellipse 335 148 90 270 3 13 ellipse 601 148 0 359 12 13 circle 552 147 13 changepattern 9 linestyle 3 line 353 100 527 145 linestyle 1 line 572 141 575 143 line 575 143 599 138 line 599 138 616 137 line 616 137 626 140 line 626 140 639 148 line 571 140 586 136 line 586 136 604 133 line 604 133 615 132 line 615 132 628 133 line 628 133 639 138 line 570 141 564 144 line 564 144 574 143 fatbit 567 143 15 568 143 15 569 142 15 570 142 15 571 142 15 572 142 15 573 142 15 574 143 15 571 141 15 562 144 0 562 145 15 562 144 15 561 145 15 563 145 15 528 146 15 528 145 15 529 145 15 529 144 15 528 144 15 527 144 15 526 144 15 530 144 15 530 145 15 528 146 0 529 146 15 528 146 15 531 145 15 526 143 15 530 146 15 531 146 15 532 146 15 532 145 15 532 146 0 593 138 0 594 137 0 595 137 0 fatbit 606 136 0 605 136 0 603 135 0 604 135 0 602 135 0 601 135 0 600 135 0 599 135 0 598 135 0 597 136 0 596 136 0 flood 547 149 changepattern 11 flood 478 144 line 571 139 556 140 line 556 140 544 140 line 544 140 527 135 line 572 143 567 148 line 567 148 554 154 line 554 154 548 158 line 548 158 529 163 line 529 163 508 170 line 520 153 492 159 line 492 159 476 158 line 534 152 511 162 line 520 146 485 146 line 485 146 459 150 line 458 150 432 147 line 490 140 436 140 text 526 112 613 122 Puddle~ text 348 168 558 177 ~ text 377 167 639 177 Rod near puddle, warming up~ text 408 93 631 104 WARMING UP TO WELD~ line 551 120 551 130 text 444 101 535 110 (top view) ~