Tested and is working well but it is too weak to worth it. Use as a quick spare part only. Unless you can print it with Nylon :D
I bought the aluminum version but I think I'll hold to these as they work like a nice fuse that protects the rest of the system if some stick or rock locks a wheel too hard. Also, they are fast and cheap to print.
Print as is. 3 perimeters with 100% rectilinear infill and, with supports. I do recommend to use a brim for better adhesion.
ABS, PETG or superior. I do not recommend PLA as this part is prone to impact and higher temperatures. But if you test it and it works let me know! :D
It may be printed with 0.3mm but I did not test it this way.