I configed my computer (P3-866) which runs the small 4 axis with Mach3 (set for 25,000 pulses) with some of the settings from Turbocnc
The mm per step setting I used to convert to steps per unit; which was painless for sure
I ran the same program I ran last night; a tapered sided 10mm sq with 7mm bottom 4 mm deep; filleted corners which changed frm 2mm top to 1.75mm bottom
The run last night would hesitate at the fillets and once finished the pocket measured 9.65 sq at the top
Tonight with Mach3; it never stopped untill the cut finished; the top measured 10mm exactly; it also was way smoother; the 200mm/min feed was about as fast as i would want to run with a 1/16" 2 flute in Corian (I use Corian offcuts for testing)
I'm one very satified customer; it was worth the price of the Key to open up the software for sure; my programs will be over 1000 lines almost every time I'll run it
If you have been mulling over paying the price to get your key; stop and go for it