"have to" is a strong word. But you've got to pump a *lot* of current, and long cables will get both very heavy and very expensive very quickly.
- Vote on answer
- posted
14 years ago
DIY resistance welding?
Loading thread data ...
- Vote on answer
- posted
14 years ago
- Vote on answer
- posted
14 years ago
I just stuck together 2 crossed pieces of 6mm rod. They were stuck fairly well but I did get the weld area to fail when I held one in a vise and twisted the other to try and align the pieces, probably do for a spice rack though. That may have been an issue with the material which was I think EN16T which I had to hand. I'll try and redo the test with some mild steel and round and square for interest sake and post back. The spot welder is a 240V handheld unit, spec plate says 2kVA conventional, 11kVA welding , 7000A.
- Vote on answer
- posted
14 years ago
What's that Lassie? You say that Steve B fell down the old sci.engr.joining.welding mine and will die if we don't mount a rescue by Mon, 12 Apr 2010 21:07:04 -0700:
What ???
That is what we are discussing.
- Vote on answer
- posted
14 years ago
In college we had (late 60's) an RF or radio frequency driven spot welder. The hole unit could fit in a suit case - ours on the top of a 24" x 24" lab table.
We used it to spot sheet metal for various jigs and projects. The many many many strand wire was over an inch in diameter. It was a foot feed clamp on it - so you could hold two parts with hands.
Mart> steamer writes:
- Vote on answer
- posted
14 years ago
Remember the metal inside and out should be clean - to lower resistance and allow positive weld in a spot.
Mart> Steve B wrote: