# Accurate method to wrap a sketch around a cone

**URL:** <https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234>\
**Category:** Share your creations\
**Created:** [March 23, 2022, 1:12am UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234 "2022-03-23T01:12:24Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![PEC](https://avatars.discourse-cdn.com/v4/letter/p/67e7ee/32.png) [@PEC](https://discourse.shapr3d.com/u/PEC)\
**Post date:** [March 23, 2022, 1:12am UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234/1 "2022-03-23T01:12:24Z")

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Hi,

in a previous topic, I presented a method to wrap a sketch around a cylinder with known accuracy, saying the process could be extended to a cone.  
[Accurate method to wrap a sketch to a cylinder](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-to-a-cylinder/18024)

Here is the adaptation of the method to wrap a sketch around a cone. In first approximation, accuracy is the same as for cylinder.  
 ![sketch around cone small](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/4/4897ab5b40e8e60f8d511ba869467c054340db52.gif)

The process is roughly to slice the cone in sectors (piece of cake) and place them in such a way that they project onto a plane as a perfect 2D sector.  
To do it easily, it is convenient to place the cone section with the oblique line in vertical position.  
An odd number of slice is recommended : 9 or 15 are good choices.  
Then, as for the cylinder, the cone is built after the sktech has been projected, using the align tool.  
Of course, you will have to create the sketch in polar coordinate 😀 (polar effect on some app can help) and, as for the cylinder method, ensure that no control point of a spline will project too close to an edge of the flatten cone, or the extrusion may fail. Extrude _before_ doing the union of the slices or it may also fail.

 ![Wrap sketch around cone2](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/e/e4cbe0e3408ff7eee195ab1dfd5a34c05ed95b85.jpeg)

This method is a workaround for those who don’t have access to wrap or emboss tools but still occasionally need to accurately wrap a sketch around a cone on their tablet.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/b7fc9fba2375f08afe33783fe2993fd629b1788d.jpeg)

It can be adapted to a certain extend to free form shape 😉

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**Author:** ![Rohan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/rohan/32/15410_2.png) [@Rohan](https://discourse.shapr3d.com/u/Rohan)\
**Post date:** [March 23, 2022, 3:39pm UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234/2 "2022-03-23T15:39:14Z")

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You are brilliant @PEC ! 🤩 🤩 🤩 🤩

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**Author:** ![PEC](https://avatars.discourse-cdn.com/v4/letter/p/67e7ee/32.png) [@PEC](https://discourse.shapr3d.com/u/PEC)\
**Post date:** [March 23, 2022, 7:34pm UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234/3 "2022-03-23T19:34:10Z")

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😊🤗

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**Author:** ![Stephen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/stephen/32/16350_2.png) [@Stephen](https://discourse.shapr3d.com/u/Stephen)\
**Post date:** [August 31, 2022, 9:34am UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234/4 "2022-08-31T09:34:30Z")

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Great tips, thanks 👍

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**Author:** ![JRRYAN](https://avatars.discourse-cdn.com/v4/letter/j/848f3c/32.png) [@JRRYAN](https://discourse.shapr3d.com/u/JRRYAN)\
**Post date:** [April 21, 2023, 6:15pm UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234/5 "2023-04-21T18:15:20Z")

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Thanks @PEC here’s what I did with your help:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/b/7/b71fffc1699d7a39d6f8d1758c9f630f2385b100.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/7/e/7edc6e93936e896df8ed836a5bbdf574f491363d.jpeg)

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**Author:** ![Stephen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/stephen/32/16350_2.png) [@Stephen](https://discourse.shapr3d.com/u/Stephen)\
**Post date:** [April 21, 2023, 8:47pm UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234/6 "2023-04-21T20:47:48Z")

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Nice work on that ring.

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**Author:** ![PEC](https://avatars.discourse-cdn.com/v4/letter/p/67e7ee/32.png) [@PEC](https://discourse.shapr3d.com/u/PEC)\
**Post date:** [April 23, 2023, 1:48pm UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234/7 "2023-04-23T13:48:08Z")

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Hi @JRRYAN

Many thanks for your message and congratulation for the design of the ring, it looks really great!

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**Author:** ![LauHak](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/lauhak/32/26823_2.png) [@LauHak](https://discourse.shapr3d.com/u/LauHak)\
**Post date:** [May 23, 2024, 9:26am UTC](https://discourse.shapr3d.com/t/accurate-method-to-wrap-a-sketch-around-a-cone/18234/9 "2024-05-23T09:26:51Z")

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You just said a few simple words, and then casually attached a video, do you think you are being polite to us? 🤣 Your behavior makes me feel like I am an idiot 🤣