# Construct 3D mesh from surface triangles

**URL:** <https://community.freefem.org/t/construct-3d-mesh-from-surface-triangles/865>\
**Category:** General Discussion\
**Created:** [March 23, 2021, 12:05pm UTC](https://community.freefem.org/t/construct-3d-mesh-from-surface-triangles/865 "2021-03-23T12:05:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![yongxing](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/yongxing/32/3632_2.png) [@yongxing](https://community.freefem.org/u/yongxing)\
**Post date:** [March 23, 2021, 12:05pm UTC](https://community.freefem.org/t/construct-3d-mesh-from-surface-triangles/865/1 "2021-03-23T12:05:01Z")

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Hi,  
I have some surface triangular meshes in VTK format. Is there a quick way to construct the volumetric mesh based upon these surface triangles?  
Thanks in advance.  
Yongxing.