Hey,
I see several videos in Youtube, that CNC is using chain drive instead of screw or belt.
https://www.youtube.com/watch?v=x-tDJAon3Ag
Someone can share experience about it ? Most interesting is accuracy and speed, lubricating and how stepper motors like nema 34 is working with chain tensioning.
I am thinking about 3 x 3 meters cnc, with 3,5 kw spindle, nema 34 hybrid motors. It will be designed for MDF milling.