Accessories - Clamps
Bar Clamps
I found these solid brass bar clamps and modified them to be used with the system.  I removed the tighting screw and built a replacement which would accept the ground wire.  The new screw was turned from a 3/8" solid brass punch that was knerled on the shaft.  A 10-24 machine thread was cut that matched the clamp about 7/8" long and the oppsite end was drilled out with a 5/32" hole about 7/8" deep to allow the banana plug to plug into it.  Now it is just a matter of plugging the clamp into one hand piece jack on the main unit "grounding" the work piece allowing resistance soldering to take place.  The longer one is will open to about 6" while the smaller one will open to about 3 3/4".  The are both made out of 1/4" brass.  They are available from Lee Valley Tools in Canada and Micro Mark in the USA. 
Machinist Clamp
I built this little clamp from scratch from 1/4" brass with a 1" throat.  I modeled it after the common machinist or parallel jaw clap. Again, the tighting screw was built with the same diamentions as the ones I built for the bar clamps allowing it to be "pluged" in.   One item to note is that since these are bilt out of brass I run the risk of soldering the clamp to the work piece but with careful planning I have avoided this so far.  I may line the clamps with alumium or stainless if the need arises.
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