An adjustable swivel foot for leveling tables; the foot is 40mm in diameter. This model is modeled around an m6 nut and bolt; 1 bolt and 1 nut are needed per foot (if using the box, you will need an additional nut).

I used this model to level out my PC desk with a 10-degree A-frame leg design, where the box and 10-degree wedge help make it possible not to have to make holes in the desk leg and to make the box mess well with the desk legs. After installing the hardware, I glued together the two parts with the ball in the middle and used the hole in the bottom to tighten the foot to the box with an Alen wrench (I used a round-headed internal hex head bolt).

PRINTING:

No support is needed (you might want some for the ball if your printer does not do unsupported roofs that well)