goatman
10 MW
anyone using 18650 batteries for a DC arc welder. ive used 2 truck batteries in series for 24v welding. I think ive seen J Mantzel weld with solar panels but haven't seen anyone using 18650s
john61ct said:volts is volts, amps is amps
Measure your Ah per session usage first so you know how big a pack to build.
Select your cells so your peak amps usage is well below what the testers here say they can handle.
Ignore vendor claims about their C-rate.
john61ct said:The only shunts I am familiar with are used to measure current not regulate it so I dunno.
My comments were just based on electricity in general, know nothing about welding.
I assume you know the volt/amp specs for the machine you plan to use?
I don't even know what side my own toast is buttered, much less how or why to butter a shunt!goatman said:why do you butter shunts to get more amps?
goatman said:now I get it, a shunt measures the current and the controller controls the current? but why do you butter shunts to get more amps, that's what made me think a shunt regulated current to 40 or whatever amp its rated at
DogDipstick said:Might as well build a homemade plasma cutter.. lol. Home made DC welder sounds a little dangerous. Lol.
Either or, I do not think 18650 is the correct choice for this.
john61ct said:can structural aluminum be welded this way?
if you were using hem for welding, well, they're not meant for htat.goatman said:ive tried those bernzomatic brazing rods but wasn't impressed
amberwolf said:if you were using hem for welding, well, they're not meant for htat.goatman said:ive tried those bernzomatic brazing rods but wasn't impressed
if you were brazing wiht them, remember they're meant to braze specific metals together, and those have to fit pretty closely, becuase essentially you are soldering them together with brass rather than lead/tin. they'll fill a certain amount of gap, but not much unless you have the skill / equipment to do that right.
and brazing, like welding, has it's own skillset and techniques, that if not used right, don't make very good joints.