Another DIY CNC router, part 1 (goals, design, components)

Not so mini this time :)
0:00 Review of first machine shortcomings, goals for new machine
11:05 New machine design
17:32 Checking ball screws and rails from Aliexpress
29:10 Spindle and VFD overview

YL620A RS485 woes:
https://forum.linuxcnc.org/24-hal-components/39128-yalang-yl620-vfd-rs485-modbus-communicaiton
https://forum.linuxcnc.org/24-hal-components/38733-vfdmod-an-easy-vfd-control-over-modbus-rtu?start=60#218634