I have an imported step file from other CAD software. There are circular holes with chamfer on a curved surface, but Fusion is unable to recognize the circle as a circle. When using inspect tool, the circle on either sides of the hole only shows length, not radius. However, when clicking on the hole surface, inspect tool does show radius. How can I measure the radius of the circles and the chamfer? Thanks!
You will need to zip up the STEP file and attach it to your post for others to be able to troubleshoot your issue.
John Hackney, Retired
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As I said in the first post, you must zip the file up to attach it. Certain files must be zipped to be attached and this is one of them.
John Hackney, Retired
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Fusion 360 cannot measure either of the hole feature, and return a diameter, because the features are not circles, they are ellipses. A circle cut on a curved surface will create ellipse edges. In the attached screen capture I have cut a section across the midpoint of one of these holes and then sketched a line (blue) between two of the points on the middle ellipse. If you look close you will see the dark edge line below the sketched line. It is curved, where the blue line is straight. This is why you get a Length measure from Fusion 360.
John Hackney, Retired
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You could probably get by pretty well by using the Sketch command in the drawing environment. It will snap to keypoints of the elliptic holes and you can dimension to them.
Please mark you post as solved if you are satisfied with the answer.
John Hackney, Retired
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If you Project the edges to a sketch in the modeling environment - they do not match standard drill sizes (I checked in mm and in inches).
You might create them slightly larger (to a standard size).
Thank you. Interestingly, the diameter I set to was exactly 5.7mm, instead of 5.692. Though it was a great suggestion, and I have changed the holes to standard drill sizes. How did you project to a sketch and get recognizable circles? I projected on an offset XY plane and it showed length only still.
Also, although I am able to calculate the diameters and distances, I am still unable to create a center mark. I tried to create a cross in drawing sketch, but the snap feature really does not allow the line to start at where I want it to be. Is there a way to create center marks? Thank you!
Fusion
