# Creating a hook with spline

**URL:** <https://discourse.shapr3d.com/t/creating-a-hook-with-spline/2996>\
**Category:** Modeling Questions\
**Created:** [October 9, 2018, 4:38pm UTC](https://discourse.shapr3d.com/t/creating-a-hook-with-spline/2996 "2018-10-09T16:38:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jspiegz](https://avatars.discourse-cdn.com/v4/letter/j/b5a626/32.png) [@Jspiegz](https://discourse.shapr3d.com/u/Jspiegz)\
**Post date:** [October 9, 2018, 4:38pm UTC](https://discourse.shapr3d.com/t/creating-a-hook-with-spline/2996/1 "2018-10-09T16:38:27Z")

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How would I go about this? I created a base, spline and tried to use the feature…  
 ![image](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/9/988ecaa9c16ca89e9a86eb6a71b752c4f51aaa9d.jpeg)

Like so…  
Help!

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**Author:** ![DanielR](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/danielr/32/582_2.png) [@DanielR](https://discourse.shapr3d.com/u/DanielR)\
**Post date:** [October 9, 2018, 4:46pm UTC](https://discourse.shapr3d.com/t/creating-a-hook-with-spline/2996/2 "2018-10-09T16:46:30Z")

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Hi- If you look at the error message on the top you’ll see that with this spine you would create a self-intersecting body, which is not possible.

Please adjust your spine and you will be able to create the hook. Attaching a couple of pics to help differentiate

selfintersecting:  
 ![PNG](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/c/c0fb09a45bc82fd1022b3a5e3db77f51aba801c9.jpeg)

valid body:  
 ![PNG](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/9/90b6a5e7b4a6b15a009e8e91a8499e296f557478.jpeg)

Also, this video shows you how to do a hook: [https://www.youtube.com/watch?v=dHCiPBnc\_qA](https://www.youtube.com/watch?v=dHCiPBnc_qA)

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<div class="post-metadata">

**Author:** ![Jspiegz](https://avatars.discourse-cdn.com/v4/letter/j/b5a626/32.png) [@Jspiegz](https://discourse.shapr3d.com/u/Jspiegz)\
**Post date:** [October 9, 2018, 5:02pm UTC](https://discourse.shapr3d.com/t/creating-a-hook-with-spline/2996/3 "2018-10-09T17:02:11Z")

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Thank you! A bit confused on the difference. Will watch the video