# Resampling or modify mesh properties of a model to get light .stl files
**URL:** https://discourse.slicer.org/t/resampling-or-modify-mesh-properties-of-a-model-to-get-light-stl-files/1584
**Category:** Development
**Created:** [December 4, 2017, 11:06am UTC](https://discourse.slicer.org/t/resampling-or-modify-mesh-properties-of-a-model-to-get-light-stl-files/1584 "2017-12-04T11:06:17Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@terajnol](https://discourse.slicer.org/u/terajnol)
#### Post date: [December 4, 2017, 11:06am UTC](https://discourse.slicer.org/t/resampling-or-modify-mesh-properties-of-a-model-to-get-light-stl-files/1584/1 "2017-12-04T11:06:17Z")
Hi everyone,
I am trying to obtain a 3D model of a vertebra from DICOM images, and to display it in other applications, such as a 3D pdf. So far, my solution is to export a stl file from Slicer and then to translate it to u3D with MeshLab for example.
Thanks to the tutorial and the Segment Editor module, I could manage to get a nice 3D model rendering and to export it as .stl file (by cropping, thresholding and a bit of filtering and then exporting my segmentation as a model).
However, my stl file is still heavy and I couldn’t find a way to resample my model, or to modify the mesh properties. Am I missing a module or an option within Segment Editor ?
Thank you for your help,
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [December 4, 2017, 12:41pm UTC](https://discourse.slicer.org/t/resampling-or-modify-mesh-properties-of-a-model-to-get-light-stl-files/1584/2 "2017-12-04T12:41:46Z")
You can use “Surface Toolbox” module’s “decimate” option to reduce mesh size without changing visual appearance of the model.
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### Author:  [@terajnol](https://discourse.slicer.org/u/terajnol)
#### Post date: [December 5, 2017, 1:14pm UTC](https://discourse.slicer.org/t/resampling-or-modify-mesh-properties-of-a-model-to-get-light-stl-files/1584/3 "2017-12-05T13:14:36Z")
Ok perfect, that was exactly what I was looking for.
Thanks !