MPCNC 4th rotary axis

I’m currently adding a 4th rotary axis to my MPCNC.
I’m going to use GRBL MEGA 5X with TB6600 drivers to control everything.
GRBL GRU seems to be an obvious choice for controlling the drivers.
Has anyone done similar?
Has anyone got and advice to offer

A few around here have done it, but how are you going to make the CAM?

I’ve thought to use DeskProto Multi Axis Edition.
I’m learning this CNC stuff as I go along. I have degrees in engineering but didn’t work much with CNC in my career… I make mistakes and blow control boards up :joy::joy:
What do you think…
I’ve also made a lowrider. I’m using GRBL on a CNC shield on that… Its brilliant. Thank you for your help and designs


Maybe this might help you: ZenziWerken | PoorMans4thAxis

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Hello. Just an update on my project…
The firmware is working now. GRBL MEGA 5X controlled by GRBLGRU.
I’ve mounted the MPCNC on a open box section frame. This allows me to place it atop some big timber slabs. Making it very portable.
It also allows me to sit it above the 4th rotary axis assembly. That works really well too. I can now rotary carve at will.
I can post a video of it working somewhere if anyone’s interested


I’m interesting some video and/or pictures.


Yes please!