and a close up of the transformer.

It had an "H" type core, easy to cut away the secondary coil as it isnt wound onto the primary like so many.

For my secondary heavy windings, I actually used two lines of the heavy stranded wire (2 or 3 ott). 2.5 turns as stated before. I am also running my primary on 220V. secondary voltage (no load open) is only about 3 volts.

I used a heavy duty toggle clamp as you can see, and bolted the aluminum arms to it.

For spot welding into confined areas I disconect the wires off the heavy arms and use a smaller set of tips I hold by hand.

Works really well and is something you wont know how you did without!

Andrew Coholic