I recommend printing from ASA but PETG will also work. 0.2mm layer height. 4 or more perimeters will make it stronger. I also included a variant for printing laying on the arms (as a pyramid) so that the orientation of the layers makes it even stronger.
Dimensions:
Wholes prepared for countersunk screws of 3 to 4 mm diameter.
UPDATE: added variant of 5mm version placed on the pad as pyramid for symmetrical orientation of the layers to make it even stronger - must print with brim
The author marked this model as their own original creation.