Tevo Tornado Feet (M5 screws)

This is not my design. These feet were designed by redpiyaya (see source) to be used with M3 screws. I have M5 T-nuts so the only thing I did was to enlarge the hole for M5 screws.

To install each foot (so everything is x4)
1- remove the small foot
2- remove the bracket
3- reinstall the bracket on top of the 20x20 extrusion
4- install the foot (3 M5x16 or M5x18 and 3 M5 t-nut)