Quote Originally Posted by jonnycnc View Post
2) what brand of ballscrew should I use? I read some reviews suggesting some brands have lots of backlash - are Chinese suppliers generally okay?
3) For the Lichuan drives linked above and for this size of machine are these going to need more than a 320W power supply? Im keen to keep this low profile and was considering this psu https://planet-cnc.com/product/powersupply-48v320w/ . Its quite expensive , alternatively this one is 25% of the cost https://www.ebay.co.uk/itm/320W-48V-...cAAOSwMgdXzn13

Sounds too cheap for such a supply, has to be junk right?
Im just not keen on placing orders with china that takes 6weeks to arrive unless I know they are good/ worth the time (which is money after all)

Made lots of projects but have to say options on cnc diy is confusing - lots of Chinese fake parts , not clear manufacturer origins, model number differences dm860/L etc. A lot to digest

Cheers Jonny
If a little concerned you could opt for this:
https://www.cnc4you.co.uk/Breakout-B...U-48Volt-12Amp
Akmost double the capacity. Yes it's more expensive but it's not that much bigger in size.
You know you're covered then.

I have these ballscrews on my mill:
https://www.ebay.co.uk/str/cyber-ebu...at=22348999012
Came properly spaced. Good thing about DFU is they can be tweaked with thin aluminium foil betwwen the nut/spacer, spacing them further to eliminate any backlash. Got mine right down.