# Mesh: remove hard edges?

**URL:** <https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861>\
**Category:** Mesh WIP\
**Created:** [April 10, 2020, 1:45pm UTC](https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861 "2020-04-10T13:45:56Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Michael\_Meyer](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/michael_meyer/32/767027_2.png) [@Michael\_Meyer](https://discourse.mcneel.com/u/Michael_Meyer)\
**Post date:** [April 10, 2020, 1:45pm UTC](https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861/1 "2020-04-10T13:45:56Z")

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Hi @pascal,

1. Is there a quick way to converte hard edges to soft edges in meshes? Here an example:

 ![convert_hard_edges](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/b/a/ba471c20baeb8daf804b284a1605f88c0c4086d5.png)  
[mesh\_rings.3dm](https://discourse.mcneel.com/uploads/short-url/tvh5JgO8OgQowAc8fg2toikCOR3.3dm) (39.8 KB)

1. Is there a mesh modeling (to subd) tutorial for Rhino 7?

Thanks

Michael  
[www.flexiCAD.com](http://www.flexiCAD.com)

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**Author:** ![pascal](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/pascal/32/479395_2.png) [@pascal](https://discourse.mcneel.com/u/pascal)\
**Post date:** [April 10, 2020, 3:45pm UTC](https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861/2 "2020-04-10T15:45:25Z")

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Hi Michael - do you mean, by ‘soft’, welded, or actually soft-shaped, like a subD? You can use `RemoveCrease` on a mesh or subD edge, but on the mesh here it will not change anything visually; or if you `ToSubD` that mesh ring, you can use `Crease` or `RemoveCrease` per edge…

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/1/1/118c98fcc84b14f49a5fb5c23d17c5564ac9fea4.png)

But I think I am misunderstanding the question, perhaps.

-Pascal

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**Author:** ![Michael\_Meyer](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/michael_meyer/32/767027_2.png) [@Michael\_Meyer](https://discourse.mcneel.com/u/Michael_Meyer)\
**Post date:** [April 10, 2020, 3:58pm UTC](https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861/3 "2020-04-10T15:58:01Z")

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Hi Pascal,

I’ve started with a quad, used \_ArrayPolar, and tried to join that.

After joining the quads I still have open edges.

 ![quad_joining_open_edge](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/3/a/3a60d9f82fbe7792681e3d641ec3cb18b74086e4.png)

[mesh\_rings\_2.3dm](https://discourse.mcneel.com/uploads/short-url/wmrqA2SqDMbJuaTIZCCAPaeN2XK.3dm) (49.6 KB)

I am lost somehow with mesh-modeling. Hm?

How would you create this mesh ring?

Thanks

Michael

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**Author:** ![pascal](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/pascal/32/479395_2.png) [@pascal](https://discourse.mcneel.com/u/pascal)\
**Post date:** [April 10, 2020, 4:11pm UTC](https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861/4 "2020-04-10T16:11:04Z")

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Hi Michael - the vertices are not exactly-exactly in the same locations - use `AlignVertices` and then `Weld` to get an unexplodable mesh.

-Pascal

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**Author:** ![Michael\_Meyer](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/michael_meyer/32/767027_2.png) [@Michael\_Meyer](https://discourse.mcneel.com/u/Michael_Meyer)\
**Post date:** [April 10, 2020, 4:21pm UTC](https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861/5 "2020-04-10T16:21:53Z")

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Hi Pascal,

that worked, thanks.

So \_Join makes me unhappy, why doesn’t it align the vertices in the modeling tolerance? Also the vertices have exact the same position, with no tolerance.

Is this a bug?

Thanks

Michael

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**Author:** ![pascal](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/pascal/32/479395_2.png) [@pascal](https://discourse.mcneel.com/u/pascal)\
**Post date:** [April 10, 2020, 5:14pm UTC](https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861/6 "2020-04-10T17:14:43Z")

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Hi Michael - yeah, I’ll take a closer look. The vertices are not identical, microscopically, but I’d expect them to be weldable without the alignment step as well. I’ll see what I can see…

-Pascal

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**Author:** ![theoutside](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/theoutside/32/473900_2.png) [@theoutside](https://discourse.mcneel.com/u/theoutside)\
**Post date:** [April 10, 2020, 5:14pm UTC](https://discourse.mcneel.com/t/mesh-remove-hard-edges/99861/7 "2020-04-10T17:14:48Z")

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for verts that don’t quite line up, try the new stitch command… it works on meshes.