T and Corner Welds

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Subject Author Date
T and Corner Welds Bob La Londe 07-17-2008
Posted by Bob La Londe on July 17, 2008, 3:16 pm
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For steel I have a small assortment of magnetic holders for quickly
positioning pieces for welding. Put a tack or two on, check the angles and
finish the weld.

Um... how do I do that for aluminum? Modeling clay?


Posted by BobH on July 17, 2008, 4:42 pm
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Bob La Londe wrote:
> For steel I have a small assortment of magnetic holders for quickly
> positioning pieces for welding. Put a tack or two on, check the angles and
> finish the weld.
>
> Um... how do I do that for aluminum? Modeling clay?

I have a pretty stout welding table that is sheared square with the
corners cut off, so I locate off the table edges a lot. I use several of
those corner clamps, but they are not real square. I also have some of
the cheapo cast iron right angle blocks that I clamp to the work with C
clamps. C clamps are the backbone of what I use. The Vise Grip welding
clamps are good too.

Most of what I do is TIG welding and the magnetic clamps cause major arc
blow for me, so I never got to liking them much for steel.

BobH

Posted by Martin H. Eastburn on July 17, 2008, 9:30 pm
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And for TIG that can't stand a magnet to be near by ?

Same issue as Aluminum I suspect.

I have items the size of a thumb and have to do T TIG joint - the flat
is on the bottom with a rising shape - small joint area.
All I can figure is sacrificial clips that hold but overheat and go bad.

Maybe I can spot weld and then forget the clip. ?

Martin

Martin H. Eastburn
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Bob La Londe wrote:
> For steel I have a small assortment of magnetic holders for quickly
> positioning pieces for welding. Put a tack or two on, check the angles and
> finish the weld.
>
> Um... how do I do that for aluminum? Modeling clay?


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Posted by BobH on July 17, 2008, 10:42 pm
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Martin H. Eastburn wrote:
> And for TIG that can't stand a magnet to be near by ?
>
> Same issue as Aluminum I suspect.
>
> I have items the size of a thumb and have to do T TIG joint - the flat
> is on the bottom with a rising shape - small joint area.
> All I can figure is sacrificial clips that hold but overheat and go bad.
>
> Maybe I can spot weld and then forget the clip. ?

I bought a Miller handheld 220V spot welder used and it is very cool! I
folded up some sheetmetal boxes and spot welded them together and the
results looked pretty professional. If you are doing small work, the
120V one would probably be fine. The 220V version will blow holes in the
work if you are not quick and the work spotless clean.

Bob

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