Rotating something to alignwith something else (again).
I need to rotate the inner and outer rings such that the mid point of one of the teeth aligns (in the top view  bottom right) with curved construction line. I've pulled the curved line down so that it intersects the rings, but it doesn't really help much in determining how much to rotate each ring as it doesn't create a point or line to which I can snap to (accurately) determine the rotation angle needed.
I've tried eyeballing it, but it simply isn't accurate enough. I eventried calculating it geometrically, but I musta messed that up because it was wildly out.
Any suggestions?

Sent.
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I smoothed the shape of the tooth by using a Spline. The solid cutter was pulled up and out by 0.1mm otherwise it will not cut. The outside and inside edges can easily be formed into smoother edges.
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Thanks.
I'm retiring drunk (only mildly, just 1 bottle of wine), for the evening. And tomorrow we have family. Back at it on boring Sunday mornin' :)
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Hi Buk,
I thought i'd answered but i understand and admit ( hands up) not clearly enough.
As you've succeded  this is all probably pointless.
The angle of rotation was established by making a circle ( or an arc ) through common crest features on the inner teeth group.
Pull arc or circle into a face
With the 'Split Curve' command ( under Sketch Mode (?) in constraint version) a curve may be split ( for a point position or to place a point) by any touching ( min distance = 0) curve AND by a curve continuation (tangent) , virtual curve intersection !
Also, a curve may be split by any actual ( real) intersection with a face or plane AND also by a virtual extension of a face.
The placement of points by splitting curves could be much better explaned with examples in DSM Help pages.
Certainly your teeth are meshing very well now.
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Tim:"As you've succeded  this is all probably pointless"
Indeed.
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Curve splitting also works for partial cones and torus... it just gets better !
Understood Buk  no problem.
If only i'd have discovered this before...
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