300lb (empty!) card catalog (72 drawers) with 4 legs with small (51mm) round feet, not good for my hardwood floor. So I made these to protect the floor, and better distribute the load to a larger surface area. The original was hollow underneath, designed for a light load.
Printed in 95A TPU, solid bottom, hollow top sides.
The author remixed this model.
Customized to my size, made solid for strength.