I have fixed the CNC3018 to the table top. This allows you to increase the rigidity of the structure, as well as place the electronics in the basement.
Fasteners of the limit switches on the inside of the profile are inconvenient for installation and maintenance, so I created a thing that is compatible with T-nuts for the 2020 aluminum profile.
The thing allows us to make an adjustable endstop for our machine from the holder for 2020 profile, for example, this solution, or this.
The author marked this model as their own original creation. Imported from Thingiverse.