Mach3 lathe spindle pulleys problem

[m_c]

I was always told that I would not be able to thread successfully with Mach but it looks like I will just need to discount pulley ratios too.
Will just play a while with what i have then look at changing to linux. I chose to keep Mach 3 cos i was familiar with it , but looks like it falls short on a 64bit operating system.

Thanks for inputs anyway.

Mach 3 can produce perfectly acceptable threads.
Only thing that won't work on 64bit, is the parallel port driver. Mach itself still works perfectly fine, you just need to use an external motion controller.