Resistance soldering

[CG Bob]

I have one of the American Beauty light capacity tweezer-style units. It has a 250 Watt variable resistance power unit. I've been using it to solder handrails and masts for r/c boat models. Mostly 1/16" - 1/8" rod, or 1/4" - 3/16" tube. The nice thing is the tweezers can act as a clamp to help hold parts in place before and after making the solder joint. The heat tends to be localized at the electrodes, so you don't need a lot of secondary heat sinks around the joint.