I (probably among others) suggested discharging a capacitor into the
primary of a soldering gun to get a high current pulse out the secondary
as a spot welder, but I've never tried it myself. However, for blade
welding you need continuous current to do resistance welding, not a
pulse of current for a spot weld. Maybe this is what to do with all
those old low duty cycle ac stick welders now that everyone has moved up
to MIG? :-)

--
Regards,
Carl Ijames

"Mark" wrote in message
...
An old PM article uses a homebrew transformer similar to the one I
wound in 10th grade for my from-scratch soldering gun. A long time
ago!

I recall someone's suggestion that a "real" soldering gun could form
the basis for a spotwelder - all I'm interested in doing is making
better bandsaw blade joints than my crappy Silver soldering has
produced to date. My bandsaw only has 10-inch wheels, and I haven't
been able to make a lasting joint in HSS - 1/2 inch stock....

Before I rush out and buy a cheap soldering gun, has anyone done this
successfully?

Thanks / mark