MK4S vibration dampening feet

A vibration dampening foot for the MK4/MK4S frame. It is designed to go on the inside of the frame so that the MK4 toolbox (https://www.printables.com/model/508680-mk4-tool-box) can still fit on the outside.  It is also designed to use a rubber anti-slip foot to prevent sliding. Works well when printed in PETG.

I changed the base to make it easier to affix to the frame of the MK4S (from the inside) and still allow a MK4 toolbox to be placed on the outside of the frame (https://www.printables.com/model/508680-mk4-tool-box). I also flattened the base and added a screw hole so that a rubber anti-slip foot can be added to prevent the printer from slowly sliding across a desk. I printed 6 for my MK4S although 4 probably would suffice.