After watching at least 20 videos on making Rocket Stoves, I decided to try my own design. I scrounged up enough scrap materials laying around the shop to make one that works really well. I used A 10 inch piece of 3" stainless tubing
and a short piece of 1-1/4" sq tubing about 5 inches long with a 45% end.
I also used some 1/2" nuts and bolts in case I wanted to level it or use it on a picnic table top and not scorch the wood.
Or I could use a scrap piece of wood in between the rocket stove and my jeep bumper.
A good way to test for penetration is the cut and etch test.
If the test is done while the weld is still fresh on you mind, there is a lot that can be learned and welding technique can be adjusted and improved.
I used a lincoln electric power mig 210mp for the first welds with settings of 19 vol...
TIG welding cold rolled steel 3"x3" x1/4" using er309L and E70s-6 filler metal.
12 outside joints provides plenty of welds to experiment using different size filler metals and pulse settings too.
There is also a second video of filling in the corners using silicon bronze.
Controlling the puddle, getting adequate penetration, avoiding undercut, preventing arc blow, and complying with AWS D1.1 acceptance criteria are all important.
Some welders are being required to test using 5/32" 7018 electrodes instead of smaller diameter electrodes like 1/8". 130 amps is at the...
