These are parts designed for a stand-alone frame for the AMS Lite to be top-mounted but not on the printer, in an attempt to eliminate the vibrations arising from movement of the AMS Lite system when loaded with 4 spools while the printer is running.
The printable parts are designed for 1x2 inch legs and a 2020 t-slot bar on the top. The feet are connected to the steel legs using 4 M5 bolts that thread into rivet nuts on the legs.

The shoulder parts also connect to the legs using M5 bols and rivet nuts. The current height of the legs requires longer PTFE tubes, but the height came out unnecessarily too tall.