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.
This is a portal axle for Lego Technic. The gear ratio in the hub is 2:1 when using 8t and 16t gear. You can use a pair of 12t gear too.
With the rim design of mine. You can get a good pivot point for the steering.
Print with 0.1 for better resolution, but the ones in the picture is printed with 0.15.
I have tried 0.2. It works great too.