Is any body know why the preset plane shift from one configuraion to another without change anything, I use outside circle surface as a second refenerce which is perpendicular
tangent with top plane, first several configuarions work fine, and then the plane shift from one side to another side of circle surface, which make the feature failed.
see the attached model two D configuration
I use a sketch line to define tangency planes - and they have never switched side for me (yet)...
(See attached example)
Good luck !
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