# Creating a bifurcation cylinder (y-shaped)

**URL:** <https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362>\
**Category:** Modeling Questions\
**Created:** [October 16, 2020, 7:06pm UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362 "2020-10-16T19:06:17Z")\
**Posts on this page:** 11\
**Page:** 1

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**Author:** ![oaselim](https://avatars.discourse-cdn.com/v4/letter/o/73ab20/32.png) [@oaselim](https://discourse.shapr3d.com/u/oaselim)\
**Post date:** [October 16, 2020, 7:06pm UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/1 "2020-10-16T19:06:17Z")

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Hello,

I would like to know how to create a Y-shaped cylinder. I am currently able to create a cylinder and create angulations in it. Could you kindly illustrate me how to do a bifurcation?

Thanks.

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**Author:** ![tommyn](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tommyn/32/1714_2.png) [@tommyn](https://discourse.shapr3d.com/u/tommyn)\
**Post date:** [October 16, 2020, 8:27pm UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/2 "2020-10-16T20:27:08Z")

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Why not Join 3 separate cylinders?

Best,

Tommy

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**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\
**Post date:** [October 17, 2020, 4:44am UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/3 "2020-10-17T04:44:20Z")

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Is this what you mean?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/0/01ac9220d13cf6cecf13283474d80bdaf319a70c.jpeg)

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [October 17, 2020, 11:22am UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/4 "2020-10-17T11:22:19Z")

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That’s very hard to do with solid modeling, usually these kind of shapes are done by surface modeling. The closest thing you could do is to union 3 connecting cylinders, and blend the new edges. But it may not result in what you expect.

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [October 17, 2020, 4:39pm UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/5 "2020-10-17T16:39:35Z")

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Do any of these work for you?  
Two of them are suggested by Tommy and Oregonerd.

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/6/65148be7cfec55a1d92a8149b035094808476155.MOV](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/6/65148be7cfec55a1d92a8149b035094808476155.MOV)

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**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\
**Post date:** [October 17, 2020, 5:28pm UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/6 "2020-10-17T17:28:00Z")

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The thing I love about helping here is it is teaching me so much. Thanks TigerMike! 👍 You are a valuable resource here! 😁

I was noodling how to do the red and green versions. Haven’t had the time yet to sit down to it.

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**Author:** ![oaselim](https://avatars.discourse-cdn.com/v4/letter/o/73ab20/32.png) [@oaselim](https://discourse.shapr3d.com/u/oaselim)\
**Post date:** [October 18, 2020, 11:18am UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/7 "2020-10-18T11:18:19Z")

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Thank you so much TigerMike! Yes, that’s what I was looking for. Could you kindly tell me how did you join the two bifurcating limbs to the central one (green cylinder)? Thanks

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**Author:** ![oaselim](https://avatars.discourse-cdn.com/v4/letter/o/73ab20/32.png) [@oaselim](https://discourse.shapr3d.com/u/oaselim)\
**Post date:** [October 18, 2020, 11:23am UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/8 "2020-10-18T11:23:07Z")

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Thank you for posting this. Yeah, I am looking for something similar like the green cylinder in TigerMike’s comment.

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [October 18, 2020, 1:40pm UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/9 "2020-10-18T13:40:53Z")

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I think he simply united three cylinders, then filleted the edges between them.

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [October 18, 2020, 2:40pm UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/10 "2020-10-18T14:40:06Z")

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Istvan is correct. I made a cylinder, copy rotated 30° at the base, copy rotated -30°, moved vertical cylinder down, used **Union** and then did a fillet.  
-Mike

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/e/edccd91d41d05418326e2e0116618217c1ac4824.MOV](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/e/edccd91d41d05418326e2e0116618217c1ac4824.MOV)

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<div class="post-metadata">

**Author:** ![oaselim](https://avatars.discourse-cdn.com/v4/letter/o/73ab20/32.png) [@oaselim](https://discourse.shapr3d.com/u/oaselim)\
**Post date:** [October 18, 2020, 3:28pm UTC](https://discourse.shapr3d.com/t/creating-a-bifurcation-cylinder-y-shaped/9362/11 "2020-10-18T15:28:17Z")

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Thank you so much for your help, Mike!