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?
Step 1: What is needed
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
Step 4: ...and finishing
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
I wonder if it will be easier to learn welding with normal electrodes.