Hey guys,
I’m trying to fillet these edges all around, but I’m not finding a method that really works.
What would be the best way to do this?
Thanks
Notice how the edges are in the corners:
Hi,
FilletEdge?
1 Like
Hi there.
By default I can’t even select the edges after entering the FilletEdge command.
And if I click “FaceEdges” I can select the faces but not the required edges.
I think your model needs to be solid for FilletEdgeto work? Isn’t it a closed polysurface?
Can you upload the file for me to check out?
1 Like
Sorry, it’s my first time using Rhino in a decade or so! 
What do you mean “closed”? Like Non-Manifold?
Can you give me some pointers about how to make the model closed/non-manifol?
Sadly this is a proprietary model and I can’t share it.
More like watertight.
I you have individually selectable surfaces than you can select them all and Join them to get a polysurface. Whether it’s a solid depends on how precise your seams are.
You can also use ShowEdges to display naked and non-manifold edges.
Looks like one of the Daft Punk helmets to me. 
1 Like
Awesome! Thanks a lot, diff-arch. Joining the required meshes made it possible to fillet all the necessary edges! 
Have a great day!
(An exaggerated fillet to show it worked)
1 Like
Hey @diff-arch I have some difficulties and I think you can help me.
While FilletEdge works most of the time, there are some corners that it just can’t seem to deal with so nicely. Like these:
I’ve set them to a low level just to test:
However, on these more complex corners this happens:
Any tips?
Thanks
I would suggest to rebuild the bottom face of the helmet so it is one piece and not a polysurface. Then big fillets before small fillets.
Hi Martin. I’m unable to rebuild it for some reason.
It was created using “Blend Surface” + “ChainEdges” on the exterior edges of the helmet (on the interior it was a single selection).
By rebuilding I actually meant you should delete the surfaces and sweep a clean surface all around. Then extend the inside and outside a bit and trim both with the sweep and vice versa. If you want, you can post a file with just the bottom 2 centimeters and I’ll show you.
Hey @martinsiegrist, I’ve checked and I have permission to share the entire file with you, privately.
I’ll send you a message in a bit.
1 Like
So I deleted the existing bottom surface of that part and extended the individual surfaces so I was able to do a clean cut with a slightly curved surface. Then joined everything into a closed polysurface.
1 Like
Amazing! Thank you so much! 