Welding with car batteries? alternator?

[Thedude]

I've seen videos on youtube of how people have made welders out of 3 car batteries wired in series, or with an alternator powered by a lawnmower engine. Does this really work? If so is it strong?

 

[solomon]

Yup, its possible, welds aren't quality though

 

[Doc Sprocket]

Welding with batteries is an emergency field repair at best. Yes, it can be done, but the battery(s) don't live long, the quality isn't anything to write home about, and technically can be dangerous. Your best bet is to do thigs properly.

 

[KieranM]

yea i have heard it been done, as said its only useful for a quick fix and by no means should you build a frame using that idea.

 

[Scout]

Alternator welders are fine. Lots of industrial welders were nothing more than a big motor and a big generator. That is the best way to produce DC power.

 

[Eric492]

alternator welding sounds cool how does that work?

 

[Kenny_McCormic]

Alternator welders are fine. Lots of industrial welders were nothing more than a big motor and a big generator. That is the best way to produce DC power.

A very nice 100% duty cycle TIG can be made form an old alternator and mower engine.

 

[oscaryu1]

a very nice 100% duty cycle tig can be made form an old alternator and mower engine.

o: How?!

 

[crazycart]

http://www.huv.com/jon/jeep/Welder/portable-welder.html

 

[solomon]

That is awesome! What size diodes should be used?

 

[Doc Sprocket]

Premier Power Welders come to mind.

 

[Kenny_McCormic]

You can vary the field voltage to change the amperage.

 

[Kaptain Krunch]

Might have to try this out. Whats the chance of getting shocked?

 

[Thedude]

Thanks guys. My parents said I couldn't buy a welder. They never said I couldn't make one.....

 

[KieranM]

yea.....but from a parent view i think they would prefer you to buy one.