Put my solidoodle 3 on a 3 Shelf Baker's Rack but it was tilting to and fro with the print head moving at speed. I tried putting some of the large carpet moving pads (thin tin discs with felt) but they bent and didn't help much. Made this to help stabilize the rack by placing "spikes" on the bottoms to make more solid contact with the ground and less of the carpet. Success...and my first THING too. My rack has 25mm posts. The .STL has a 25.5mm hole for the posts and they fit okay, but not all the way in. Might want to make that hole 26mm or just scale X and Y to 1.1 or something. If I started over, I'd reduce the height between the post hole and spikes to save some filament. Printed mine at .25mm layer height, .50 infill, honeycomb, and supports for the post hole. Came out nice and stable but if you have thicker carpeting, you may want to lengthen the spikes as well.