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LtBadd wrote: AndersK, you snapped it off before starting the weld!! :lol: :lol:
So you really think I can weld? :lol:

It actually needed 2 or three bends to snap off :mrgreen:
Dalzani
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    Sun Jul 30, 2017 7:46 pm

Hello all again.

Trying some overlaps on thin aluminum 1.5mm. I don´t know why but seems to be much more difficult then a butt joint using the same thickness. Probably the weld is good but it is VERY ugly. What i´m doing wrong?

By the way... 60A for the bead.

Thanks all.
Overlap bead
Overlap bead
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motox
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the sheets need to be clamped as so the edge does not lift or warp.
use a backer and tack often.
if the edge lifts heat gets under the edge and melts it away.
hope this help some
craig
htp invertig 221
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Dalzani
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No clamps was used. And just a few tacks 3 or 4 in a 35 cm extension. Next time I´ll double the tacks and buy some long clamps. You are sure a did a lot of deviations to refill the burned edges.

Thanks.
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No too bad, just need more time to maintain consistent speed.

When welding long flat surfaces I use a small piece of fire blanket that I fold to about 4 layers. Rest your palm at it and you won't get burned and it helps you slide along easier.
Dalzani
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    Sun Jul 30, 2017 7:46 pm

AndersK, good ideia.

And what about "Tig Finger"? Anyone knows the material used?

Edited...

I did not see any penetration on the back side of aluminum. Using 60A and was already very difficult to avoid burning the edges.

Is this right?

Thanks.
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