Hi,
I have started building CNC machine from black granite surface plate.
Dimensions of surface plate: 650x750mm
Working area of finished CNC machine: 200x200x100mm.
Used and worn surface plate was used for this project.
Below you have a movies about building my CNC machine from black granite:
https://youtu.be/bkmn34lKe_E
https://youtu.be/sbincod2e3c