Easy-to print riser feet for standard laundry rack (about 16mm diameter tube).

• rises the rack enough to trigger robovac collision sensors (tested with Roborock S5)
• still allows folding
• better floor protection
• no more lost clips or clips facing in the wrong direction
• glueless & screwless assembly with cable ties
• easy print for flex / semiflex (PLA is fine for pins), no supports
• slightly parametric (tube diameter and spool diameter)
• provided stl work perfectly for the standard rack model

I made mine from Fillamentum Flexfill 98A. The pins are only needed for centering, probably some cardboard slips will do just as well.