A few years ago I picked up 3 Spadix adhesive tables and converted them to cnc plasma cutters. At the time I installed a simple thc system that utilized a hobby servo motor and voltage feedback smoothed by a capacitor (http://www.cnczone.com/forums/cnc_plasma_waterjet_machines/46175-idea_$10_plasma_torch_height.html).
A buyer of one of the machines has run it almost non-stop for the last 2 1/2 years and built a nice plasma art business for himself. He contracted me to build him a new machine and I opted to put a LCTHC system from Caudle on it (http://www.candcnc.com/). Hook up and install was a breeze after I read and re-read the manual. The only thing I was not able to get working correctly was the arc-okay current transformer and I think that had to do with the jumper settings.
We had a chance to run the new system all day Saturday and once we got the setup and tuning between SheetCAM, Mach, and machine it did a beautiful job holding voltage and cut quality.
I think for the money this can't be beat and even though we only build a few plasma machines per year I am definitely going to add this on every machine.
-Steven Balder
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