# Conic Spiral

**URL:** <https://discourse.shapr3d.com/t/conic-spiral/4145>\
**Category:** Modeling Questions\
**Created:** [February 23, 2019, 6:19am UTC](https://discourse.shapr3d.com/t/conic-spiral/4145 "2019-02-23T06:19:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shembach](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/shembach/32/3349_2.png) [@shembach](https://discourse.shapr3d.com/u/shembach)\
**Post date:** [February 23, 2019, 6:19am UTC](https://discourse.shapr3d.com/t/conic-spiral/4145/1 "2019-02-23T06:19:41Z")

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Hi all,

I’m trying to create a spiral/spring in a conic shape. I created a non-conic spiral with the revolve tool, but sadly am not able to make it conic. I’d like to have a spring that sits tightly around a cone, therefore the spring has to also be conic (tighter on one side than the other)

Any help would be greatly appreciated.

Thanks in advance!

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**Author:** ![hamedtopic](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/hamedtopic/32/3371_2.png) [@hamedtopic](https://discourse.shapr3d.com/u/hamedtopic)\
**Post date:** [February 23, 2019, 6:49am UTC](https://discourse.shapr3d.com/t/conic-spiral/4145/2 "2019-02-23T06:49:59Z")

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Hi,  
While there is not a direct solution to that, you can follow the process below ;

Add a constructive plane through the middle of the cone, see below:  
 ![image](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/0/015f3962e111a09f712c47df8ad03b3760197b2e.jpeg)

Double tap on the new plane, Sketch in 2D over it (the appropriate angle of the spiral), below:  
 ![image](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/8/8c9b22a6f0323f790757f121862aae958ee0fbf9.jpeg)

Use Project tool to project the 2D sketch on the conical surface, the result will be as in the below vid:  
[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/5/58aa25954c7cc3de8c92c86025be8d726e401c6f.MOV](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/5/58aa25954c7cc3de8c92c86025be8d726e401c6f.MOV)

You might want to add cross section to the wire, simply add the cross section to the beginning of the spiral and then use the sweep tool, etc.

Have fun

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<div class="post-metadata">

**Author:** ![shembach](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/shembach/32/3349_2.png) [@shembach](https://discourse.shapr3d.com/u/shembach)\
**Post date:** [February 23, 2019, 8:34pm UTC](https://discourse.shapr3d.com/t/conic-spiral/4145/3 "2019-02-23T20:34:07Z")

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Thanks a lot! Will try that out. I’m pretty new to the CAD game, appreciate the detailed instructions!