# Rotary Cam Lobe

**URL:** <https://discourse.shapr3d.com/t/rotary-cam-lobe/6017>\
**Category:** Modeling Questions\
**Created:** [November 11, 2019, 6:20pm UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017 "2019-11-11T18:20:08Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![kitsushadow](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@kitsushadow](https://discourse.shapr3d.com/u/kitsushadow)\
**Post date:** [November 11, 2019, 6:20pm UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017/1 "2019-11-11T18:20:09Z")

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![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/d/d0e170f6c9ee72bab054eab3a653a5a8e350afe9.jpeg)

If you look, you’ll see there are pointy bits at the peak and valley. I’d like those to be smooth curves. Ideas?

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**Author:** ![Hans](https://avatars.discourse-cdn.com/v4/letter/h/e19b73/32.png) [@Hans](https://discourse.shapr3d.com/u/Hans)\
**Post date:** [November 11, 2019, 8:44pm UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017/2 "2019-11-11T20:44:50Z")

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Make a sketch on top with the right radius, make a body and then cut it down with it. Good luck…

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**Author:** ![Gelphyn](https://avatars.discourse-cdn.com/v4/letter/g/db5fbb/32.png) [@Gelphyn](https://discourse.shapr3d.com/u/Gelphyn)\
**Post date:** [November 11, 2019, 8:56pm UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017/3 "2019-11-11T20:56:06Z")

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@kitsushadow  
Is this any good?:

 ![IMG_0813](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/a/acf167b69f22c49bb91ca378e0a9620e51e21285.jpeg)

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**Author:** ![kitsushadow](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@kitsushadow](https://discourse.shapr3d.com/u/kitsushadow)\
**Post date:** [November 11, 2019, 10:46pm UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017/4 "2019-11-11T22:46:05Z")

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@Gelphyn yes, that is what i was looking for.

How did you get the max min edges smooth?

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**Author:** ![Gelphyn](https://avatars.discourse-cdn.com/v4/letter/g/db5fbb/32.png) [@Gelphyn](https://discourse.shapr3d.com/u/Gelphyn)\
**Post date:** [November 12, 2019, 4:52am UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017/5 "2019-11-12T04:52:43Z")

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@kitsushadow  
A simple **Tools \> Loft** of **various height Rectangles** placed appropriately on a **Sketch** of a **Concentric Circle pair** :

 ![IMG_0814](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/c/c846f49ccb9348ad8be2067aa8a8ff380f74f925.jpeg)

@Hans  
Welcome to the Forum, looking forward to seeing your contributions 🕶

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**Author:** ![kitsushadow](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@kitsushadow](https://discourse.shapr3d.com/u/kitsushadow)\
**Post date:** [November 13, 2019, 4:46am UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017/6 "2019-11-13T04:46:02Z")

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![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/79f4ab5ceb34f7b4f0abd3918c9a4934ef57a118.jpeg)

parts prepped for printing

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**Author:** ![Gelphyn](https://avatars.discourse-cdn.com/v4/letter/g/db5fbb/32.png) [@Gelphyn](https://discourse.shapr3d.com/u/Gelphyn)\
**Post date:** [November 13, 2019, 12:28pm UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017/7 "2019-11-13T12:28:52Z")

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@kitsushadow  
Thanks for sharing with the Community👍  
Great to see ‘real’ results, keep up that good work.

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**Author:** ![kitsushadow](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@kitsushadow](https://discourse.shapr3d.com/u/kitsushadow)\
**Post date:** [November 13, 2019, 2:25pm UTC](https://discourse.shapr3d.com/t/rotary-cam-lobe/6017/8 "2019-11-13T14:25:33Z")

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Thanks for the assists!