I am currently struggling with modelling the internal spline geometry of a spline coupling. I was following a similar method for the external model with the hope i will flip the sketch at some point, this has however not been possible.
1. Fully constrain your sketches.
2. What is your specific question?
3. Post the actual file, not just an image.
Yeah what is your actual question here?
It looks like you're just a couple steps away from having what you want.
1. Close & fully define the sketch?
3. Circular Pattern?
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