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Old 2nd Aug 2018, 10:09 pm   #28
MrElectronicman
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Join Date: Feb 2011
Location: Washington DC, USA
Posts: 619
Default Re: Battery tag spot welder.

I am still waiting for my timer from China, but in the meantime here are some pix of my transformer.

I cut off the HV windings with a hacksaw and pushed out the remaining copper with a cold chisel, and also removed the two magnetic shunts. This gave me lots of room to wind on a couple of turns of welding cable, which is very flexible.

As you can see I did not have to touch the lams.
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