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Latest "Under the Hood" on Sketches

andrew_troupandrew_troup Member, Mentor Posts: 1,584 ✭✭✭✭
edited November 2015 in Using Onshape
Lots of pure gold. Take this, for example:

let’s take the case of a cylinder that points directly at the sketch so that its edge projects as a circle. There are two ways to make a point coincident with the projection of that edge:

  1. Select it, and the point, and add a coincident constraint.
  2. Use the edge and then put the point on the resulting circle.

Now if you change the earlier feature so that it tilts and the edge projects to an ellipse, the “use edge” will fail. It will be unhappy because it can only be a circle, but what it wants to follow is now an ellipse. So it won’t change and neither will the point. However, the direct constraint WILL work because it doesn’t care what the curve is as long as a point can be coincident to it.

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