Safety hook to attach a 'A-Frame' shelf unit to the wall to keep the cats from knocking it over in the middle of the night (again). I make no claims on the strength of the hook but it works well for cat proofing. As usual your mileage may vary. OpenSCAD source is included if you want to make changes.

Wanhao

Wanhao Duplicator i3 V2

No

Yes

0.2 or 0.3

Yes