What type of solder should be used for attaching electrical wire to a large clamp (base wire will be screwed into clamp handle). I am making a fractal wood burning device so current will be coming from a neon light transformer. Note specs on transformer: 10KV 10000V - Power 120V AC 50/60Hz. I have solder for small electronic projects, but have been told such solder is not durable enough for this job. Thanks, R.