Many thanks for the design, the printing took a while, but it’s worth.
My mpcnc is 90x80cm, has 25mm stainless steel tubes and uses a Makita router driven by Estlcam.
I’m able to mill almuminium, not very fast, strictly speaking, very slow, but it works.
With my 3d printer I had always troubles with overheated stepper drivers, so I decided to build an air tunnel to active cool them.
The bed is made of 12mm MDF, except the top plate which is 19mm. I added a lot of Screw-in sleeves (every 10cm).
I also built in an USB socket and a power socket for the router, and an emergency stop button (which also stops the router)