Just a variation of Wyatt design, improving the structural strength by adding support. Using similar design than the one by Darklighte in https://www.thingiverse.com/thing:4558090 to facilitate stackability.

Prusa

Prusa Clone

No

No

0.3

20%

I've must have printed over 20 versions of it, each with some modifications in either design or print settings, so here it comes my most successfull settings:

Layer height: 0.3
Wall thickness: 0.8 for ring, 1.2 on legs (Cura allows this)
Infill: 20 % for ring, 0% for legs (this avoids brittleness on legs).
Infill Pattern: gyroid (recommended).

If you have trouble printing the tip of the legs (bending while printing), then use Z Hop. I've used Z Hop only over printed parts with great success. Also use aggressive cooling (80+%).

If you have trouble "stacking" the legs (hole too small, leg to chubby), you might want to check the horizontal expansion. I'm using -0.1 with great success.

Build plate adhesion: not necessary, but I do recommend using skirt as it allows to see if the nozzle is clogged from previous prints.