Transfer tank

[MMW]

Closing up is why I suggest 3/8 or bigger hole. Once you have a pilot hole opening it up further goes quickly. Once the hole closes with slag you get blow back and it's hard to get it through again. I would rather spend a little more time drilling than being showered in sparks. Glad you got it ...

[MMW]

Hi Don. What wire were you using? Brand, number and size. Just curious. Nice work on the tests.

[MMW]

G-ManBart - 2% thoriated works excellent on aluminum on a transformer machine such as a syncrowave. I'm sure there is some other color that works too but please don't say "Thoriated won't work well on aluminum" because that just is not true.

To OP - As far as torch goes you have...

[MMW]

Black soot is contamination. If you are sure the material is clean then it could be gas. Do you have gas flowing out of torch? No leaks anywhere? Is torch assembled correctly with seals in good shape. What size tungsten? Using matching collet? Have you tried another tungsten? If you have another...

[MMW]

About half way through ran out of 3/32 tig rods so I take two 1/16 rods, clamp in vice, other end in drill and twist em. This gives you plenty of filler instead of trying to finish using 1/16. Had two spots with porosity that were easily ground out and fixed. I tacked about every four inches and...

[MMW]

Time for another tank. L shape transfer tank used for diesel fuel. Whole bottom is extremely pitted, leaks repaired in the past with epoxy stuff. Did not think I could do it cheap enough by cutting off the bottom and replacing so just plated over the whole bottom. Used 1/8 steel and tigged it. Pic 1...

[MMW]

All of the above.

[MMW]

Welcome. Ask what you want. Hopefully it pertains to welding/fabricating. No question to dumb.

[MMW]

Looks like a reasonable fix. Do you wash the tank out or just let it evaporate dry?