NOTE: THIS DEVICE HAS BEEN DISMANTLED IN DECEMBER 2010, TO MAKE THIS OTHER, THAT IS BETTER.
This torch is inspired in the work of Phil B:
I wanted to do something different (sorry, I'm so).
I thought: if two carbon electrodes forms arch, why not try with only one?
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Step 1: What Is Needed
A piece of thick wire. I bought a 60 Amps, 1 meter. It can be shorter.
A spring clip, in proportion to the cable.
A piece of wood 1 x 1 inch, to make the handle.
A screw with two washers, a nut and a "butterfly nut"
A carbon electrode. I used that of a D size, 1.5V carbon battery.
Step 2: Beginning
Make a hole to the spring clip for the screw, pass it and secure it with the nut. The head of the screw must be inside a spring clip.
Step 3: Continuing...
Step 4: ...and Finishing
The other end of the cable must be soaked with tin, in this way it don't will disassemble whit the use.
This end of the cable must enter in the electrode-holder clamp.
Step 5: Now, Lets Try It
But if one is clumsy using metal electrodes, remains clumsy with carbon electrode ("the monkey, though silk dress, monkey is.").
Step 6: Epilogue
The thing works, but I must learn to use it.
I wonder if it will be easier to learn welding with normal electrodes.