Tig or mig ?

[Mathius]

Thanks....my machine is a ESAB DTB250. Think I can hook up a pedal to it but at the moment i don't have. I will get one later if I will do a lot of TIG welding in the future....



Olav

I've welded with or without the pedal. When I was trying to get my 6g cert, you have to weld a fixed pipe, so you pretty much have to stand up to get all the way around it. So using the pedal was out.

I think I prefer the foot pedal, honestly, you can cut back the heat a bit when the metal starts to get hot.

I had to stop after about 2 passes, to let the piece cool down before I could weld the final 2. The heat was ok for the material, but it was too hot for me to keep my hand up there without burning it right through the glove.

Good luck with your fuel cell and let us know how it turned out.

Mathius

[Tom Vogel]

Just a reminder. More than one person has been seriously burned or killed outright by doing what you are talking about. There are several precautions one could take to lessen the risk, but none would satisfy me to the point where I would risk it. If you are feeling lucky, I would at least have the tank boiled out at a radiator shop first.
Good luck, a burn unit is a sad place.

[gt1guy]

Not trying to stop you from doing what you want. But here's something to think about. If you get in a wreck and there is a fire do to a fuel tank that you made or modified in your garage, and god forbid, someone gets hurt, your through.

"Last time i did it i had trouble with leakings"

This tells me you welding skills might not be up to par for attacking a project such as a fuel tank.

Just take a step back, and honestly evaluate your skill, and the dangers of getting it wrong.

Kevin

[Mathius]

Not trying to stop you from doing what you want. But here's something to think about. If you get in a wreck and there is a fire do to a fuel tank that you made or modified in your garage, and god forbid, someone gets hurt, your through.

"Last time i did it i had trouble with leakings"

This tells me you welding skills might not be up to par for attacking a project such as a fuel tank.

Just take a step back, and honestly evaluate your skill, and the dangers of getting it wrong.

Kevin

I wouldn't be worried so much about his welding abilities, as much as his safety procautions.

As Tom Vogel said above, people have been seriously hurt by gasoline before, and welding on a fuel tank is always risky.

If he were welding a new one from scratch, he could leak test it easily with water first. This is why I say I wouldn't be so concerned with his welding ability.

It's the fact that he's welding not only on a fuel tank that already had fuel in it, but one that had baffles, which specifically are designed to keep fuel from moving in the tank, I really think extra care needs to be taken to make sure the tank has been properly purged and cleaned out of all gasoline residue and fumes.

Mathius