# How to make the model surface close

**URL:** <https://discourse.slicer.org/t/how-to-make-the-model-surface-close/38171>\
**Category:** Support\
**Created:** [September 3, 2024, 7:02am UTC](https://discourse.slicer.org/t/how-to-make-the-model-surface-close/38171 "2024-09-03T07:02:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jay1987](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jay1987/32/16183_2.png) [@jay1987](https://discourse.slicer.org/u/jay1987)\
**Post date:** [September 3, 2024, 7:02am UTC](https://discourse.slicer.org/t/how-to-make-the-model-surface-close/38171/1 "2024-09-03T07:02:50Z")

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![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/2/7259231e98b6559423d0d10111c362d79da8ce2e.jpeg)  
i use dynamic models to cut model into two seperate models , one of them is the blue picture upper,but the surface is open like the red rectangle in the picture , the opened surface can’t do 3d printer work . is it possible to use any extension or coding to make the opened surface close?

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**Author:** ![jay1987](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jay1987/32/16183_2.png) [@jay1987](https://discourse.slicer.org/u/jay1987)\
**Post date:** [September 3, 2024, 7:06am UTC](https://discourse.slicer.org/t/how-to-make-the-model-surface-close/38171/2 "2024-09-03T07:06:19Z")

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is use dynamic modeler make the [Cap surface] Option choosen ,the result is the picture below  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/7/87edd5bf4a12c592ada008d17785a8c344114b44.png)  
the closed surface is wired,what the doctor need is make the surface picture below closed  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/8/38672c7cfc0933fc73d8b1c8165a7137f19e34f1.png)