which opens the contactor via a small DC relay. This removes the connection between the nozzle and ground, leaving the plasma to carry all the cutting current. We’ve featured many, many CNC ...

We were either going to have to laser-cut all these things and then run them through machining centers and machine all the ...

This 5-axis CNC router could soon be an open source tool. [Mike Calvino] built it for the School of Architecture at the University of Arkansas. It can be used as a router or as a plasma cutter ...