Full Version: Boolean difference - one of those days!

Hi All,

I'm thinking this should be a straightforward boolean difference operation.. but no!





I'd just like to create recesses for the ring shank in the collet but I keep getting errors as above.

Any suggestions please?

Many thanks!
Gunter

Attachments:
oval stone east west ring.3dm

Image Attachments:
Screenshot 2024-09-05 at 19.24.08.png  Screenshot 2024-09-05 at 19.24.29.png 

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Hi Gunter, I'm still investigating but I think it's getting confused with some grazing edges.

Try with this attached version where I rotated the circle by 90 degrees before making the ring part.

- Michael

Attachments:
oval stone east west ring2.3dm

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Hi Gunter, also Trim seems to handle this case ok so using Edit > Trim to cut the pieces up followed by Edit > Join can also be used as a workaround so you can continue with your work.

- Michael

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Hey Michael,

Thank you! When you say rotated the circle by 90 degrees, could you explain which circle please?
I'm keen to figure out how to troubleshoot these issues on my own.. would you be able to guide me as to what I should look for specifically? I made sure, both parts were solid, not joined surfaces so I assumed any boolean operations would work.

As always, many thanks!
Gunter

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Hi Gunter,

re:
> Thank you! When you say rotated the circle by 90 degrees, could you explain which circle please?

This one here:



re:
> I'm keen to figure out how to troubleshoot these issues on my own.. would you be able to
> guide me as to what I should look for specifically?

Well the weird looking result seems to be emanating from where 2 edges are crossing each other, here:



So that's the area that I would focus on.

For just getting it to work so you can move forward you can manipulate the circle used to generate the ring surface so there won't be an edge/edge crossing there.

- Michael

Image Attachments:
gunter_circle1.jpg  gunter_circle2.jpg 

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Gotcha, thank you very much Michael.
When you have a chance, I'd be interested to know what causes this issue - no rush.

Much appreciated

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Hi Michael,

Just to let you know that there's no issues in Moi v3

John

Image Attachments:
2024-09-06_002946.jpg 

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Hey John,

Would you mind telling me how you got this to work?

Many thanks,
Gunter

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Thanks Michael, I did that and it worked!
Much appreciated!
Gunter

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HI Gunter,

As I said, I tried your file in Moi version 3 and the boolean works as expected.
I have version 3 and 4 installed on my system.

Best regards

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