# VAC Hose Adapter Design

**URL:** <https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596>\
**Category:** Modeling Questions\
**Created:** [September 7, 2026, 7:04pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596 "2026-09-07T19:04:01Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![tomawc](https://avatars.discourse-cdn.com/v4/letter/t/d26b3c/32.png) [@tomawc](https://discourse.shapr3d.com/u/tomawc)\
**Post date:** [September 7, 2026, 7:04pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/1 "2026-09-07T19:04:01Z")

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I have been designing various vacuum hose adapters and the method I came up with was to create 6 circles

and loft and shell each one individually. I had difficulty creating the circles and had to jump through hoops to get each circle to be an individual sketch. When I tried to create two circles on top of each other using copy I could not separate them. Attached is what I came up with. I tried using just four sketch circles but could not use shell to hollow out the cylinders. Is there a better way to create a hose adapter.

[Adapter Jointer to Dewalt 1.shapr](https://discourse.shapr3d.com/uploads/short-url/ghPDeSH9cOYuYEl9GgxEb2bbv6r.shapr) (32.3 KB)

[https://support.shapr3d.com/hc/en-us/requests/new](https://support.shapr3d.com/hc/en-us/requests/new)

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [September 7, 2026, 7:16pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/2 "2026-09-07T19:16:10Z")

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> [@tomawc](#):
>
> I tried using just four sketch circles but could not use shell to hollow out the cylinders.

> [@tomawc](#):
>
> Is there a better way to create a hose adapter.

Extrude with draft angle can be used also.

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<div class="post-metadata">

**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [September 7, 2026, 7:18pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/3 "2026-09-07T19:18:32Z")

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Do you really need these strange sizes?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/f/e/fecbb49dceb6da48427dbaee39f6690f2d5e4d61.png)

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<div class="post-metadata">

**Author:** ![tomawc](https://avatars.discourse-cdn.com/v4/letter/t/d26b3c/32.png) [@tomawc](https://discourse.shapr3d.com/u/tomawc)\
**Post date:** [September 7, 2026, 9:47pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/4 "2026-09-07T21:47:38Z")

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How do you do that? When I select angle is says No available variables.

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<div class="post-metadata">

**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [September 7, 2026, 9:52pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/5 "2026-09-07T21:52:40Z")

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> [@tomawc](#):
>
> When I select angle is says No available variables.

It’s not clear what you mean. Can you record a video?

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<div class="post-metadata">

**Author:** ![tomawc](https://avatars.discourse-cdn.com/v4/letter/t/d26b3c/32.png) [@tomawc](https://discourse.shapr3d.com/u/tomawc)\
**Post date:** [September 7, 2026, 10:00pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/6 "2026-09-07T22:00:37Z")

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Thanks Union then shell was what I was missing.

Here is my attempt at extrude angle

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<div class="post-metadata">

**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [September 7, 2026, 10:06pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/7 "2026-09-07T22:06:39Z")

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> [@tomawc](#):
>
> Here is my attempt at extrude angle

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<div class="post-metadata">

**Author:** ![tomawc](https://avatars.discourse-cdn.com/v4/letter/t/d26b3c/32.png) [@tomawc](https://discourse.shapr3d.com/u/tomawc)\
**Post date:** [September 7, 2026, 10:21pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/8 "2026-09-07T22:21:10Z")

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That was easy. How can you measure the resulting diameter?

Thanks

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<div class="post-metadata">

**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [September 7, 2026, 10:25pm UTC](https://discourse.shapr3d.com/t/vac-hose-adapter-design/41596/9 "2026-09-07T22:25:08Z")

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> [@tomawc](#):
>
> How can you measure the resulting diameter?

draft angle = arctan((D1 - D2) / (2 \* H)).

Where:  
D2 - end diameter  
D1 - start diameter  
H - height of the extrusion