# Keeping subD-vertex 90 degree in smooth display

**URL:** <https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484>\
**Category:** SubD\
**Tags:** windows, subd\
**Created:** [January 26, 2025, 7:28pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484 "2025-01-26T19:28:35Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![NOGA\_Architects](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/noga_architects/32/643952_2.png) [@NOGA\_Architects](https://discourse.mcneel.com/u/NOGA_Architects)\
**Post date:** [January 26, 2025, 7:28pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/1 "2025-01-26T19:28:35Z")

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Hi there! Probably amateur question, but I just can’t figure it out.  
Basically I am trying to achieve this

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/4/d/2/4d2f5d90418b599712df9c7cfa4085809deaf8f3.jpeg)  
from the forum topic: [Having trouble with creases not working as expected in SubD - #2 by martinsiegrist](https://discourse.mcneel.com/t/having-trouble-with-creases-not-working-as-expected-in-subd/156683/2) but still haven’t got a clue why on earth is it not working in my case.

I have 2 subD models, which I would like to 3D print and connect phisically, Therefore the joining surfaces should be perfect. While I managed to keep a subD-vertex perfectly 90 degree on the first model (M1) in smooth display, I just cannot do it on the second model (M2). I was using the \_SubDCrease command to have creased, square surfaces on (M1), or at least that’s how I recall it. I am clearly missing something here and I need some help please.

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/7/0/1/7018da07fa5f64ead2eda71ad31181bd6646aae0.png)  
 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/b/6/d/b6d91ef68816e0d5fc685db164522b0583a64356.jpeg)

Thank you!

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**Author:** ![martinsiegrist](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/martinsiegrist/32/498369_2.png) [@martinsiegrist](https://discourse.mcneel.com/u/martinsiegrist)\
**Post date:** [January 26, 2025, 8:38pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/2 "2025-01-26T20:38:54Z")

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It would help if you could share the rhino file.

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**Author:** ![NOGA\_Architects](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/noga_architects/32/643952_2.png) [@NOGA\_Architects](https://discourse.mcneel.com/u/NOGA_Architects)\
**Post date:** [January 26, 2025, 9:08pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/3 "2025-01-26T21:08:53Z")

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Yes Sir! I attached the rhino file for further details. Thank you!  
[Model 02 - forum.3dm](https://discourse.mcneel.com/uploads/short-url/ldN3alQdrSWBmHYHPv6Z6OMv9Qy.3dm) (4.6 MB)

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**Author:** ![martinsiegrist](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/martinsiegrist/32/498369_2.png) [@martinsiegrist](https://discourse.mcneel.com/u/martinsiegrist)\
**Post date:** [January 26, 2025, 9:12pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/4 "2025-01-26T21:12:32Z")

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Do you want to create a bridge?

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/f/b/d/fbd1de2c3db5eb82b1a00c3ca5a0e7aa53d3778f.jpeg)

And crease these edges?

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/2/f/5/2f5b5ff465df48622751d9e4ce892abee27b1536.jpeg)

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<div class="post-metadata">

**Author:** ![NOGA\_Architects](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/noga_architects/32/643952_2.png) [@NOGA\_Architects](https://discourse.mcneel.com/u/NOGA_Architects)\
**Post date:** [January 26, 2025, 9:16pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/5 "2025-01-26T21:16:01Z")

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Nope. I would like the keep the two separate models, but to have a square surface on both of them of the same size, even when I am in smooth display. The one on M1 is perfect, but I cannot find a way to make it on M2 as well - even though it is perfect in flat display but it transforms into a circle in smooth display.

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**Author:** ![martinsiegrist](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/martinsiegrist/32/498369_2.png) [@martinsiegrist](https://discourse.mcneel.com/u/martinsiegrist)\
**Post date:** [January 26, 2025, 9:23pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/6 "2025-01-26T21:23:22Z")

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Like so?

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/a/3/f/a3f5e872da2ac087d9deb12f1d56e42d460af56d.jpeg)

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<div class="post-metadata">

**Author:** ![NOGA\_Architects](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/noga_architects/32/643952_2.png) [@NOGA\_Architects](https://discourse.mcneel.com/u/NOGA_Architects)\
**Post date:** [January 26, 2025, 9:24pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/7 "2025-01-26T21:24:56Z")

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That is EXACTLY what I was trying to do 🙏  
Would you share the magic please?

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<div class="post-metadata">

**Author:** ![martinsiegrist](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/martinsiegrist/32/498369_2.png) [@martinsiegrist](https://discourse.mcneel.com/u/martinsiegrist)\
**Post date:** [January 26, 2025, 9:25pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/8 "2025-01-26T21:25:50Z")

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I creased these 8 edges

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/7/3/d/73ddafdb371d5674fc29d591bd9183ddbfdca0e0.png)

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<div class="post-metadata">

**Author:** ![NOGA\_Architects](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/noga_architects/32/643952_2.png) [@NOGA\_Architects](https://discourse.mcneel.com/u/NOGA_Architects)\
**Post date:** [January 26, 2025, 9:28pm UTC](https://discourse.mcneel.com/t/keeping-subd-vertex-90-degree-in-smooth-display/198484/9 "2025-01-26T21:28:14Z")

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That is the most wonderful thing I saw in the past 24 hours. Thank you very much for your help, it works like a charm!