Newby here...
Just retired from NASA and trying to set up a hobby machine shop in my new garage (with attached 3BR rambler)

. I am a EE by degree and have built most everything from chips to OS's to major systems designs. Also can confuse myself in about 12 seconds trying to admin my home/ shop network.
BobCAD suggested Mach3. I just got BobCAD v24 Mill Pro and am looking for interface down to machine(s). However, I see where a couple of add-on vendors were apparently surprised by changes in the Mach3 code and/or config tables. Is Mach3 changing support or authorship staff?
I have limited $ and time. If I must create my own 'Postprocessor', I will. However, I would sure way rather rely on a well tended project. I have more than enuff places to make mistakes as it is - LOL.
Does Mach3 allow:
4-axis support? (x,y, z,a) with proper command threading?
Dual Z support? i.e. - z1=quill, z2=knee
Spindle speed control?
Coolant pump control?
All at once??
Thanks - lovin' the excitement!
Jeff Thompson