Re-Building Suregrave CNC

[PeterC]

Many thanks for the advice, it is appreciated!

Would I be better off to swap out the old 48v PSU (the only thing still left of the original electronics) for a new 36v one (the cheap option), or upgrade the drivers to somthing like these DM680C (https://www.amazon.co.uk/2-Phase-2-4...2&sr=8-14&th=1) which are 24-100V input with 48-60v Typical then continue to run them at 48v? Upgrading the drivers at £70 quid each is a fair hit on the wallet but if this was the better route it's worthwhile. I'm sure I'll find uses for the current drivers, or I'll stick them on ebay.

I'm not too worried about slowing the speeds down while I play / learn. I just want it to be vaguely usable to begin with!!
The steppers are rated at 84V. and are pretty beefy.

For the moment I'm hoping the current setup will at least allow me to get the thing fully wired up and moving without blowing up. I have the current limits on the drivers set to 1A while i'm testing and will only up this when the machine is electrically complete. To begin with I'll probably start test cutting on MDF or florists foam while I get my head around the CAM software (think of this as training wheels for a CNC!).

Sorry for the questions...

1) Would I completely kill the stepper motor performance by lowering the supply voltage to 36V for now and use the existing drivers. Any idea if the stepper would even function?

2) If I buy new drivers, should I keep the supply at 48v or go higher (60v) or lower (36v). What are the pro' and cons?

Many Thanks

Peter