Just a regular magnetic welding clamp that you can turn off. Makes cleaning a whole lot easier.
Get it from the link above, although ive made my you may aswell use those.
You can get any regular magnetic welding clamp from many places. frost ect ect.
One thing to be added. These clamps most only ever be used when tacking up. They must not be used when properly welding up, reason for this is that magnatism molests the arc when welding.
Edited by Sam Walters, 15 June 2011 - 07:39 PM.