Consider to follow if you like what I do.
Just ask if you have an idea to a lego piece you want to be made.
I dont want to brag, but after a few hours in Fusion 360 with only pictures to go on. This is what I came up with. Its nearly perfect. If you wanna give med feedback on this, thats cool. It can be something else to fix as well.
Ppl say 3D-printing Lego is cheating. This piece exist. The price to make this is about 20% lower than what Lego sells it for and you dont have to pay shipping.
Edit, Feb 22. 2019
v2 is out and I think its finished.
I used slow speed. 20mm/s.
Maybe print vertical with the points on either sides so the ring gets strong.