The actual cutting device is an ESAB
PCM 875 with the basic handheld torch on which I use the excellent and way less than half price Centricut
tips and nozzles. The CNC mechanism was originally a kit from Torchmate
. The control card, motors, and funky DOS software came from Microkinetics
. I've scrapped and rebuilt the CNC carriage twice now, and though it's better and stronger, it's still not quite perfect. But it's plently good enough for rock and roll.
One more thing. I added some very nice pulley reducers on the NEMA 23 motors from Arrick Robotics
to get the speed low enough to cut about 3/4" thick.
There are a few pictures of the machine here