Lots of sparks

The feedwire from my heatingcoil broke today. It's a double wire of the same kind as the coil itself, it's more like a thin strip. The end of the coil is folded between the feedwire and fused together. An attempt to fuse them again with the spotwelder that we have here resulted in a rain of sparks and evaporated wires...
Now I've build a spotwelder in the lathe. One elektrode in the chuck and one in the tail stock. The elektrode in the tailstock slides in a PVC bush for the insulation, a spring behind the elektrode presses it towards the chuck-elektrode. A powersuply will provide the current to weld, I hope 10 amps will do the trick. Pictures of the welding will folow.