EDIT: updated geometry for easier support removing
My son was very upset that all his track's sets has no turns in them, so I design and print this one. Compatible with Hot Wheels tracks. Nice, smooth and sturdy. Fits up to 4pcs per plate.
Be careful when removing the supports from the inside! I did it by sliding a razor blade first, to detach them from the model.
Now I have one happy boy! :)
I am also happy with the result, so more shapes and turns will come in the future. Just need to find the time to design them.
Hope that helps you too! :)