Easy Desk Riser - Stacking Leg Holder

Ended up not using this for the original purpose - got a monitor arm and wanted to have a shelf stack on one side of my desk. Will be making a shelf stack for my (paper) printer when I get another boardUsed the f3d file from the original (posted here with this remix and my tpu feet) to make a simple holder to slide stacked legs into, as I don't want them sliding if it gets nudged. Added Parametersholder_wall_thickness - how thick the walls should be on the holderstacking_holder_h -how far up the holder walls should go.