Designed feet to help with noise. Sorbothane is a strange material and arguably as good as the paver and foam method. Although, I don't have the tools to actually measure.

Sorbothane can stain surfaces so that's why there are small pads. If you don't care about staining you don't need to use them.

Designed to work with 1in Sorbothane hemispheres from Amazon.
https://www.amazon.com/dp/B00AJ1PI66?psc=1&ref=ppx\_yo2\_dt\_b\_product\_details

I used m4 screws and T-nuts to attach to the aluminum extrusion. The electrical box is just friction held in place but if you want it would probably be easy enough to attach with double-sided tape.

In the future may design the electrical box foot to attach to the z axis extrusion somehow.