Hi all, so, thanks to user RNR107 I now have my mill up and running. Decided against computer spindle control - settled for an on/off switch and pot for speed control. This seems a lot easier than the computer controlled option! Both the switch and pot were wired directly to the Sprint control board...

Angel-tech, can you give some more advice on where the PWM 5v connects to the board between the top board and the spindle drive board? The one with the isolated analogue 0-10v circuitry?

UPDATE I removed the top board and de-soldered the original wires from the 25-pin chassis connector on the control box case. Connected the X,Y,Z axis step, DIRs and GNDs as stated here https://www.denfordata.com/bb/viewtopic.php?f=4&t=2264 I used some nice jumper/connector cables to connect directly...

Hi all, not sure where best to post this - after a day or so of reading and searching for the same topic, thought I'd take the plunge. Apologies for cross posting / if I've asked something that's already been answered. Machine is a 1995 Novamill - serial 50615C. Acquired from Dave at Global Surplus ...