Resistance soldering

[petermoblin]

Would anyone happen to know much about resistance soldering? Been thinking of buying one for a trailer build I have planned and not sure which unit to go with. The trailer will consist of a lot of 1/4'' brass square bar and not sure what wattages I should be considering to produce enough heat to properly solder the joints. I've searched google and everything that comes up is trying to sell me a unit or telling me how it works and no wattage to material size ratio.

I will continue my web search for info, just thought I'd ask around here. Hope to hear from some of the great minds on here and all input is appreciated. Thanks

[JDH429]

Ive been interested in one of these as well..id imagine you can always use more watts...
"The Mortar The Merrier"!

[rowings farms]

1/4" bar or do you mean tube

[petermoblin]

It would be solid bar stock

[CG Bob]

I have one of the American Beauty light capacity tweezer-style units (https://www.americanbeautytools.com/site/models/rs/100/features#). 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.

[petermoblin]

Thank you for the input. I've been looking at that brand of units, they seem to be the ones people prefer. I'll check that unit out. Thanks again