# Snapping Lines To Splines

**URL:** <https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037>\
**Category:** Modeling Questions\
**Created:** [October 21, 2022, 1:16pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037 "2022-10-21T13:16:03Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![Steelboss](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/steelboss/32/18525_2.png) [@Steelboss](https://discourse.shapr3d.com/u/Steelboss)\
**Post date:** [October 21, 2022, 1:16pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/1 "2022-10-21T13:16:03Z")

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Hello All,  
I am Shapr3D newbee following a Toaster tutorial:  
[Toaster Tutorial 1](https://www.youtube.com/watch?v=nxwql6tDT_o)

In the video @17:03, the Pro links a horizontal line to a Spline, and calls it “gluing”.

 ![0 spline1](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/8/5/854fee4ef12b510414a7fb47d6d4ad24ec39902e.jpeg)

From that point, he can make the organic spline Snap to wherever he wants, i.e., Grid Lines. That is a very important move (for me).  
The problem is that I cannot do it and I have tried it 50 times. I have rebuilt my model 3 times. I have watched over and over and over. I even sacrificed a bag of Gummy Bears to the Software Gods, but it didn’t help.  
I use a Mac Air M1 with a Logitech MX-3 3D mouse, running Shapr Version 5.240.0 (4221).

I wish someone could help me understand why I cannot make this Line-Spline Snap together. I would be very grateful.

Thanks!

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**Author:** ![Sebestyen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/sebestyen/32/13022_2.png) [@Sebestyen](https://discourse.shapr3d.com/u/Sebestyen)\
**Post date:** [October 21, 2022, 2:24pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/2 "2022-10-21T14:24:52Z")

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Hey @Steelboss and welcome to our community.

What our instructor means at “gluing” the end if the line to the spline is actually a constraint called “ **Coincident** ”. You can achieve this by clicking and dragging the end of the line to the spline, or by manually setting the constraint.

To manually set the constraint:

First, make sure everything is deselected in the sketch.

1. Try selecting the spline first by clicking on it,
2. While holding the **Shift** button, click on the end of the line.
3. If you have done this correctly, there should be the **Coincident** constraint available on the right. Click on it for the line to snap on the spline.

Let me know how that went! 🙂

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**Author:** ![Steelboss](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/steelboss/32/18525_2.png) [@Steelboss](https://discourse.shapr3d.com/u/Steelboss)\
**Post date:** [October 22, 2022, 11:39am UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/3 "2022-10-22T11:39:16Z")

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Thank You very much, I will try again. Also, I am an American working in China. I tried to find the User Manual, but it is not available. Is there any link I can download? I have a VPN if required.  
Thanks!  
Tony

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**Author:** ![McD](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/mcd/32/15504_2.png) [@McD](https://discourse.shapr3d.com/u/McD)\
**Post date:** [October 22, 2022, 2:08pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/4 "2022-10-22T14:08:05Z")

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Tony, it’s built into Shapr3D. Go the Learn Tab at the bottom. Then tap on the Manual tab at the top. Then tap on topics, or search for a topic. (Well it may still be a web page, but I don’t think you’ll need a VPN in China). I’ve spend lots of time in Shenzhen, Beijing, Hong Kong, and a few other cities.

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**Author:** ![Steelboss](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/steelboss/32/18525_2.png) [@Steelboss](https://discourse.shapr3d.com/u/Steelboss)\
**Post date:** [November 1, 2022, 12:18pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/5 "2022-11-01T12:18:15Z")

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Hi All,  
I have tried the instructions from @Sebestyen, but that did not work. I have searched endlessly for the Mac Manual, but I cannot find it. The “manual” link from the support page cannot be opened here.  
I have spent hours and hours over weeks trying to get my lines to snap. This is critical because without snapping, locating the gridlines is impossible. The more I zoom in, the more off the line I am and this effectively stops me. I cannot make any progress. Is there anyone who can offer me clear instructions? There must be someone who knows.  
I would appreciate any and all help.  
Tony

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**Author:** ![Steelboss](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/steelboss/32/18525_2.png) [@Steelboss](https://discourse.shapr3d.com/u/Steelboss)\
**Post date:** [November 1, 2022, 1:12pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/6 "2022-11-01T13:12:08Z")

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Here is another attempt tonight (Beijing Time).  
I have spent about 30 minutes trying everything, but I cannot snap the spline to the line to drag it onto the grid. I am trying to snap/glue Spline 1 onto line 2 using Control 3. Actually I tried other ways, too. I can move the spline, but it will not snap to anything.

 ![snaps2](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/2/1/21df91bb8c41c543474f5b8b5f6f7323c8d0f956.jpeg)

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<div class="post-metadata">

**Author:** ![Steelboss](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/steelboss/32/18525_2.png) [@Steelboss](https://discourse.shapr3d.com/u/Steelboss)\
**Post date:** [November 2, 2022, 1:07pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/7 "2022-11-02T13:07:18Z")

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Sebestyen,  
Can you please try to help me get past this issue? I am really getting frustrated about the spline snapping issue. I have paid for the software, but I need some help and I cannot access the manual.  
You can read the thread here:

> [@Snapping Lines To Splines](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037):
>
> Hello All, I am Shapr3D newbee following a Toaster tutorial: [Toaster Tutorial 1](https://www.youtube.com/watch?v=nxwql6tDT_o) In the video @17:03, the Pro links a horizontal line to a Spline, and calls it “gluing”. From that point, he can make the organic spline Snap to wherever he wants, i.e., Grid Lines. That is a very important move (for me). The problem is that I cannot do it and I have tried it 50 times. I have rebuilt my model 3 times. I have watched over and over and over. I even sacrificed a bag of Gummy Bears to …

I use Sketchup, Rhino7, Photoshop, Powerpoint. These all have smooth snapping. But I cannot get Shapr3D to Spline-snap/glue to other lines so I can get things on grid.  
This is probably a 1-second fix, but I don’t know what. I am weeks behind in my project because of this. I can call you, Zoom, whatever, I just need to sort this our.

Thanks Tony

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<div class="post-metadata">

**Author:** ![Sebestyen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/sebestyen/32/13022_2.png) [@Sebestyen](https://discourse.shapr3d.com/u/Sebestyen)\
**Post date:** [November 2, 2022, 1:41pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/8 "2022-11-02T13:41:30Z")

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Hey Tony,

As @McD mentioned, we have a huge article base over the internet. Take a look at it here: [Shapr3D Help for Mac](https://support.shapr3d.com/hc/en-us/categories/360003108519-Shapr3D-for-Mac)

After seeing your screenshot, it seems that you are trying to do is to snap the spline control point onto the line Please try snapping the non-locked end of Line 2 to Spline 1, this is the presented method in the tutorial video.

Also went ahead and sent you a message to sort things out, please check your discourse inbox 🙂

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<div class="post-metadata">

**Author:** ![Steelboss](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/steelboss/32/18525_2.png) [@Steelboss](https://discourse.shapr3d.com/u/Steelboss)\
**Post date:** [November 7, 2022, 1:34pm UTC](https://discourse.shapr3d.com/t/snapping-lines-to-splines/22037/9 "2022-11-07T13:34:20Z")

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@Sebestyen

Sir, can you give me any comment on this? I would appreciate your feedback.  
Thanks!  
Tony

> [@Lofting Problem I Cannot Resolve](https://discourse.shapr3d.com/t/lofting-problem-i-cannot-resolve/22304):
>
> First, I would like to thank @McD and @Sebestyen for comments and wonderful virtual support solving spline control point issues on my Mac. It makes a huge difference in customer retention. Thank You! I am now raising another issue I had before, and it caused me to delete a model and start over again from the beginning, only to have the same problem at the exact same step of the model. I have made sure I am following the steps correctly, with the only difference being that I am using a Mac Air …