help mach3

Its been a long time since I have messed with steppers but I think the way most go is try with a fairly low Velocity, say 40IPM then start increasing the Acceleration until you get stalling. Next drop the accel by half and start increasing the Velocity until you get stalling then its just a case of findning the happy medium between the two of them.
Personally for me acceleration is more important than velocity as it helps with regards to corner rounding issues, it will also tend to make machining quicker as most of your cutting will be done at speeds a lot less than rapid speed. As an example on my Bridgeport I could get 2500mm/min with accel of 40mm/s/s but dropping the Velocity to 2200mm/min I could get the Acceleration up to 120mm/s/s, this made a huge difference to my machining times.

Hood