Havepitty in W.Van

you weld pipe to a flange from outside of the pipe. when you look inside of the pipe, you get these "pimples" along the lines where the tig went through from outside.

sorry there is no pic. anyone who had similar incident know how to get rid of these "pimples"?

i am thinking maybe i am running too much heat and since the pipe is 18gauge... i don't mind these along the exhaust pipes, but definitly not on the intake pipes.

gimme some feedbacks if anyone knows what i am talking about.
thx.

Brent V

Once you get the puddle going you have to move at a pretty decent tick to keep the metal from getting molten all the way through. Just takes practice more than anything I think.

What kind of material? Al?

Stratocaster1422

move the bead faster. You want good penetration, but you don't really need a through weld on intake pipes...you just want something that seals.

JAFO

is to back the weld with gas to prevent oxidation. then grind the back smooth with a dremel.

Havepitty in W.Van

yea too much penetration. i need to step the power down.