Fillet edge help

I’m looking for a way to fillet the highlighted edge in the screenshot. does anyone have an idea how to? fillet edge (with chain edges) does not seem to work. some tips? added also the said file.


edges struggle.3dm (1.6 MB)

Hi Ryan

It seems the fillet fails because of some intersections in your model. There are 3 sided surfaces which can be replaced with 4 sided surfaces to achieve the fillet.

I rebuilt the shoulder of the ring so the surfaces all have 4 sides along with sweeping the bottom of the shank to remove the 3 sided surface from there.

Hope that helps

edges strugglev2.3dm (3.4 MB)


hi, thanks so much for the help! just wondering, how did you rebuild the shoulder of the ring so nicely? also, I can’t open the file because it was made in rhino8 and i only have version 7.


Here’s a little breakdown of how it could be done and the file in v7.


edges strugglev3.3dm (1.3 MB)

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This is amazing!! Thank you loads for taking the time to make this. appreciate it a ton.

  • Ryan
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when in doubt pipe trim it out…