I’ve made 2 circular (straight) hollows using boolean difference, then now I need to know the center point difference between the 2 hollows, but I don’t seem to be able to find / snap a point precisely at the center of the 2 hollows before I can take the measurement. Can anyone help? Thank you.
Have you tried the Center in Osnap ?
Yes, Jessesn, I did turn the Osnap on and Cen checked…. but no snapping… actually no any indication of it will snap as I hover the mouse over the object….. but maybe I can repeat, I’m asking / trying to find the center points of 2 circular hollows (which I made using the Boolean difference.It’s not an object, not a line, not a surface). With this condition, would it still possible? Or is there any other work around methods? Thanks.
Could you please share you current 3dm file? Thank you.
Practice 251026.3dm (464.4 KB)
Here it is, Jessesn, thank you.
You can find the center point via DupEdge + Circle, and for you reference.
Thank you very much, Jessesn. I followed every single step from your video and it worked. I’m very new to the software and so when I saw your various commands and followed, I truly not even know why do we need to do that, what does the command actually do etc. I’m starting to realize the software is vast and deep, and I can foresee the learning curve to be rather flat. But anyway, thanks very much for your help!
The thing is, you need to know WHY the center could not be found in your case. Your object is a mesh object - possibly imported? - which was in all probability originally made from a Sub-D object.
Mesh holes do not have “centers”. SubD holes, while maybe looking ‘round’ are not perfect circles. That is why Rhino does not find the “center” in either case. Jessen’s method works by fitting a perfect circle to the imperfect “near circle” and getting the center of that.
With NURBS objects, when a hole is made with a circular object, it will stay circular and the center object snap will find the center.
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