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Topics - GTRacer

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Hello all,

I know the very rudimentary basics of how the CNC machine works. My specialty is AutoCAD and MasterCAM. Mach3 is totally new to me as well. Our CNC machine is a ShopCAM from Lindsay, ON and apparently they went bankrupt and are no longer in existence as of just this past week. So I'm on my own to troubleshoot the machine.

A little on my setup:

x150 y64 z7 router table
Colombo 7.5hp spindle
Microstep Stepper motors
 - X Vexta PK2913-F4.0A 2-Phase 1.8degree/Step
 - Y Vexta PK2913-F4.0A 2-Phase 1.8degree/Step
 - Z Vexta PK296-F4.5A 2-Phase 1.8degree/Step
Mach3 R2.0.037 running in Vista (which runs fine it seems)

My first area of confusion is this. When I first started the process of learning the machine I noticed that there was a much newer releases of Mach3, so I DLed it and installed it. The ShopCAM guy came by and was kinda upset that I had did that. He said that the newest release was no good and the machine wouldn't work right, so he reverted it back to the R2.0.0037 and ran some sort of driver tests (not sure what he did) to verify that the machine was ok.
Questions:
- Is that the case or should I be running the latest version to get the best results?
- If I do upgrade, how do I do that without losing any vital setup information like motor steps per pulse and that critical sort of info?

Me second area where I need assistance is with CV and rounded corners. I can only get the square corner cuts I want right now with Exact Stop, but I've been warned by my MasterCAM people that it is really hard on the CNC machine. They told me I needed to play with accel/decel curves to get what I want. I guess this pertains to my question about release versions as well.
- Does the latest version of Mach3 handle CV better than my older release?

Thanks for any assistance and if I need to provide anymore information to help clear my situation up just ask.

EDIT: Added the actual stepper motor specs.

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