# How to build a spiral like this?

**URL:** <https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623>\
**Category:** Modeling Questions\
**Created:** [May 9, 2020, 2:08am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623 "2020-05-09T02:08:10Z")\
**Posts on this page:** 15\
**Page:** 1

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**Author:** ![apricot](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/apricot/32/6232_2.png) [@apricot](https://discourse.shapr3d.com/u/apricot)\
**Post date:** [May 9, 2020, 2:08am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/1 "2020-05-09T02:08:10Z")

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I built this model on my PC with Sketchup, and I want to make a twin in Shapr3D. However I find it difficult to draw a 3D sprial or something like that, has anybody got an idea?

 ![2020-05-09 (2)](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/2/2c08088ecebd853700adc592873f6adc557e90a8.jpeg)

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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:** [May 9, 2020, 4:51am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/2 "2020-05-09T04:51:14Z")

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Welcome to the forum @apricot  
At the top right of every page in this forum you will find a Magnifying Glass Icon.  
Tap on it and enter:

**Jubilee Church**

Then tap **Enter**

In the list that appears click on:

**More**

Also Search for

**Spiral**

You may have to click on the Keyboard Icon at bottom right to reveal **More**

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**Author:** ![apricot](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/apricot/32/6232_2.png) [@apricot](https://discourse.shapr3d.com/u/apricot)\
**Post date:** [May 9, 2020, 7:12am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/3 "2020-05-09T07:12:53Z")

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This one is a verical shape with two sprials more than 360 degrees, I not sure if that case can be of help…

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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:** [May 9, 2020, 7:20am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/4 "2020-05-09T07:20:36Z")

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Have you attempted to Search?

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**Author:** ![apricot](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/apricot/32/6232_2.png) [@apricot](https://discourse.shapr3d.com/u/apricot)\
**Post date:** [May 9, 2020, 7:29am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/5 "2020-05-09T07:29:51Z")

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Yes I viewed that thread, and it’s different, it should look like this [TMScreenshot\_2020.05.09-09.15.49|690x412](https://discourse.shapr3d.com/uploads/short-url/8uDpV8zlMZli4VfrV8if3aI0gig.png)

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [May 9, 2020, 7:46am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/6 "2020-05-09T07:46:52Z")

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would this work?

> **[RPReplay\_Final1589010108.mp4 (video)](https://drive.google.com/file/d/1wiPagAvSdN9hEnAm9ht-r4uGK6H9yxSN/view?usp=sharing)**
>
> Google Drive file.

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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:** [May 9, 2020, 7:52am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/7 "2020-05-09T07:52:53Z")

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Sorry if I failed to explain fully in my Post:

[https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/3](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/3)

Have you Opened the **Search** Facility and Typed in the word **Spiral** and then accessed the **More** feature as described.  
Given experience with SketchUp I am assuming that you would be capable of garnering sufficient information to set you on a productive route to achieve your objective.

As a Member I am suggesting where you could start looking for clues to solve your problem. Presently I am too busy to offer a detailed ‘How to’.

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**Author:** ![apricot](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/apricot/32/6232_2.png) [@apricot](https://discourse.shapr3d.com/u/apricot)\
**Post date:** [May 9, 2020, 7:58am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/8 "2020-05-09T07:58:51Z")

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OMG this is great, THANK YOU!

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [May 9, 2020, 8:00am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/9 "2020-05-09T08:00:19Z")

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👍 I am glad that it helped.

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**Author:** ![apricot](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/apricot/32/6232_2.png) [@apricot](https://discourse.shapr3d.com/u/apricot)\
**Post date:** [May 9, 2020, 8:00am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/10 "2020-05-09T08:00:55Z")

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Really Thank you! Problem solved!

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<div class="post-metadata">

**Author:** ![apricot](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/apricot/32/6232_2.png) [@apricot](https://discourse.shapr3d.com/u/apricot)\
**Post date:** [May 9, 2020, 11:40am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/11 "2020-05-09T11:40:36Z")

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Just a feedback, I find that when I use spline cruve to draw a line and offset it, the points on the new curve is oddly too many that I can not push the surface it forms.  
A video is attached to explain.

[/404](https://discourse.shapr3d.com/404)

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<div class="post-metadata">

**Author:** ![apricot](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/apricot/32/6232_2.png) [@apricot](https://discourse.shapr3d.com/u/apricot)\
**Post date:** [May 9, 2020, 12:06pm UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/12 "2020-05-09T12:06:30Z")

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I drew another spline curve to build my model, but I’m sure this bug should be fixed.(maybe limit the number of possible points on a curve?)

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<div class="post-metadata">

**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [May 9, 2020, 12:24pm UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/13 "2020-05-09T12:24:48Z")

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hi @apricot, it is not a bug, this is just how the math works behind it. You could observe the same thing in Rhino, Solidworks, etc. Offset curves of splines are complex.

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<div class="post-metadata">

**Author:** ![apricot](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/apricot/32/6232_2.png) [@apricot](https://discourse.shapr3d.com/u/apricot)\
**Post date:** [May 9, 2020, 12:30pm UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/14 "2020-05-09T12:30:03Z")

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You are correct. It’s not a bug, it’s the I-dont-understand math, jajajaja. I should go and learn more.

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<div class="post-metadata">

**Author:** ![Gelphyn](https://avatars.discourse-cdn.com/v4/letter/g/db5fbb/32.png) [@Gelphyn](https://discourse.shapr3d.com/u/Gelphyn)\
**Post date:** [May 10, 2020, 5:44am UTC](https://discourse.shapr3d.com/t/how-to-build-a-spiral-like-this/7623/15 "2020-05-10T05:44:51Z")

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@apricot  
Your Video seems to show that there was difficulty Pulling the **Closed Sketch** up into a Body?  
Accepting the above as true I created a Spline and followed the process through without experiencing any problems. Create the first Spline using less Control Points to see if that helps.  
Having created a similar Spline with 21 Control Points and achieving a similar end result, albeit the Edge curves being less smooth, the problem you experienced does not appear to be linked to the Number of Control Points.  
**Sketch \> Spline** selecting the **Control** option and utilising 6 Points:

 ![IMG_1825](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/d/d4379925f09dfd3da54259b9f142c9760454ab01.jpeg)

Fast forward to the **Closed Sketch** and forming the Body:

 ![IMG_1828](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/7426317d7b0c2bd1402b32e8fb9130acc6410d6b.jpeg) ![IMG_1829](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/7237cc60b90a1d21f26ce187b5b764fc8fb347ab.jpeg)

In the interests of clarity, for the Community, **Tools \> Move/Rotate** selection of the Edge to Drag downward creating the desired Body:

 ![IMG_1830](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/f/f66b2f5ce264978d3607d80898b97e7e7608e06b.jpeg) ![IMG_1831](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/8/837933c5af93b620f31bc37abab406bacb7358ae.jpeg)