Sketch constraint is broken
After reviewing your video I tried to reproduce and I am getting different results. Please try two different workflows for me and let me know if you still have the same results.
1. Constrain the circle to the center of the origin, then add the radius dimension to the Arc.
2. Instead of drawing the Arc past the circle then trimming, start on the circle for your first point. If a tangent constraint is needed add after the Arc is created.
Cheers,
Mike Prom
Here is one approach that works while we look at the error. I used a construction line to control the distance using a linear aligned dimension.
Hi,
Here is what I did. If this reflects what you are trying to do, I am happy to post my Fusion file.
1. Create a circle.
2. Create 3-point Arc starting from a point on the circle.
3. Create a tangent constraint between the arc and the circle.
4. Create a center-point arc as you did in your video (same center as the first arc and starting point of the arc from the center of the circle).
5. Add the dimension to both arcs.
6. Modifying their dimensions, properly resized the circle. (Note: I did notice that changing the dimension of the outer arc updated the circle size only every other time. That is, the size didn't refresh on the screen visually until the dim was changed again. However, my geometric constraints were maintained and didn't break)
best regards,
Sanjay Jayabal.
One other thing I did to workaround the visual refresh problem (that makes it look like the constraint is broken) is to trim the circle to a semi-circle. Hope this helps.
Best regards,
Sanjay Jayabal.