What I did: I offsetted a surface 0.188 units away from the surface of the extrude of the 0.6875 diameter circle. But I don't know how to ensure that the angle is 60 degrees.
Any help is appreciated!
It could be made lots of ways. A chamfer, a revolved cut, or it could be part of the first feature as a revolved boss/base.
Don't use a surface offset, use a revolved cut with the sketch profile set to the 60 degree angle.
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