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Could someone explain the difference between DFU and OFU ball nuts? DFU means double nuts but OFU means off set double nut. What does the "off set" mean here?

Should I use the ready made double ball nuts (DFU series) or make my own from single nuts? Two single nuts seems to be to more popular choice. Why?

I'm about to start sizing the ball screws and motors. What should I use as an estimate for cutting force?

I've been a bit slow on the project. Actually I've only started to model the mill so far.

I have however new ideas on the machine. LinuxCNC supports position feedback. That would be great because...

In his recent video, This Old Tony demonstrated using EtherCAT servos with Mach 4. He shows how the servo drives are daisy chained and claims that the cable coming to the first drive is plugged to...

I bought an HBM Profi 45 a couple of days ago. The main reason for selecting this machine from many options was its ISO-30 taper.

My plan is following:

Closed loop motors
Ball screws with...