Tim, I already have a probe made by Zarzul. How are you using it for centering with the Dyna ( I believe you are using Mach 3). Btw I am trying to get it (my mill not lathe)operating with the original controller. So far I can program from the keypad pretty well. I dont understand all of the sequence of Dynalan or Skip C or whatever it is. It does go thru a series of questions/prompts ( I am not sure what to call them) prior to any moves. But for simple pocketing, bolt circles and the like it seems pretty easy. I would like to know what tells me overall depth of cut and cut per pass. Soon.