Theoretical minimum

admin

Hi everybody!  I've heard that there isn't much to a welder: "Just a transformer and a switch".  My question is, is it possible to weld with just a step-down 20v transformer and 1/16" rod (and eye protection, of course)?  It's at least difficult, right?  Arc stability?  Is it dangerous? Will it trip a breaker if done wrong or anything?  Supposedly, they do this in Africa.
Reply:To arc weld, you need an arc.   Well, an arc and an electrode.   I think I've read that some folks have done trail repairs to their vehicles with two batteries in series (giving a nominal 24V DC).   And other folks have done things with wrenches or other tools and a single battery.  Usually by accident.  Or stupidity.  But a 'good' welder (the machine) generally makes your life (and the welding and the welds) easier and gives better results.  There's the whole inductance and adjustability 'thing' with a decent arc welder compared to rubbing two sticks together.   So, what -is- your question?
Reply:I think you answered it.  Electronics make it less of a hassle, like anything else, I guess.
Reply:Yes, an AC buzz box welder is little more than a transformer and a switch. Some don't even have a cooling fan. For a basic welder no electronic are required. Current is controlled by having a multi tap transformer. Could you rigg one up? Sure but why bother? By the time you made a case, bought an on/off switch that would take 50 amps, buy the plugs cables, ground clamp, rod holder, ect you could find a good used buzzbox that will probably last your lifetime. Check the garage sells and newspapers. Often $100 will get you a real welder in fine shape.