A fairly simple looking wheel.
But with only a profile view to start with and with rotated instances in the horizon, I knew that modeling this wheel could be troublesome if I was not careful early on.
The "Extend" tool to the rescue.
Despite modeling with good theoretical edges, I never would have guessed on my own that the extend tool was capable of keeping continuity to form the corner blends at the outer edge of the wheel.
No radial array tool in Alias.
Having to copy and create four extra copies of the section was an unnecessary step. I don't trust instances to keep perfect continuity so I wish Alias had a radial array tool that kept construction history.