# Change dimansions of created volume from 3d models (obj)

**URL:** <https://discourse.slicer.org/t/change-dimansions-of-created-volume-from-3d-models-obj/13307>\
**Category:** Support\
**Created:** [September 2, 2020, 9:10pm UTC](https://discourse.slicer.org/t/change-dimansions-of-created-volume-from-3d-models-obj/13307 "2020-09-02T21:10:40Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Nina](https://avatars.discourse-cdn.com/v4/letter/n/e68b1a/32.png) [@Nina](https://discourse.slicer.org/u/Nina)\
**Post date:** [September 2, 2020, 9:10pm UTC](https://discourse.slicer.org/t/change-dimansions-of-created-volume-from-3d-models-obj/13307/1 "2020-09-02T21:10:40Z")

</div>

Hello;

I have created volume from .obj file (bunny model) as explained here:  
[volume from obj file](https://discourse.slicer.org/t/create-volumes-from-3d-model-obj-file/5463)

However the dimensions of the models look very small (see attached figure). how can change the dimension of segmentation and spacing ?

 ![bunny](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/c/cc4ad57f3c73f6f2fa25754c6e024e9606789636.png)

Thank you

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 2, 2020, 11:01pm UTC](https://discourse.slicer.org/t/change-dimansions-of-created-volume-from-3d-models-obj/13307/2 "2020-09-02T23:01:28Z")

</div>

You can use Surface Toolbox or Transforms module to scale your model. I guess your bunny model uses meters as unit, so you need to scale up by 1000.0 (but it might use inches, centimeters,…).