Interesting discussion and creative solution, Antonius.
I'd like to add a couple things.
- The problem isn't simply that you have a 'rainbow' area, it's that that transition from A side to B side isn't aligned with your pull direction. This creates, as Antonius discovered, undercuts on both sides of the circle.
- I don't think you need the protruding slide-by shut off, the P/L can be right on the face of the part on each side.
- By creating this so that you have a true circle on both sides, you do not have a true thru diameter as material must be added inside the hole to make the part moldable.
- With a small bit of surfacing, what Antonius has done can all be done natively in the part which makes the database simpler and keeps all the design dims in the part
- If having a circular profile is only important on one side or the other, or even in the center, this can be made quite simply with an extrude and no slide-by shutoffs.
I've uploaded a zip file showing how to create options 4 & 5 in Creo2.