# Cut CAD model for simmetry modeling

**URL:** <https://prepomax.discourse.group/t/cut-cad-model-for-simmetry-modeling/1600>\
**Category:** Feature Requests\
**Created:** [March 12, 2024, 12:38pm UTC](https://prepomax.discourse.group/t/cut-cad-model-for-simmetry-modeling/1600 "2024-03-12T12:38:07Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![SergioP1975](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/sergiop1975/32/37_2.png) [@SergioP1975](https://prepomax.discourse.group/u/SergioP1975)\
**Post date:** [March 12, 2024, 12:38pm UTC](https://prepomax.discourse.group/t/cut-cad-model-for-simmetry-modeling/1600/1 "2024-03-12T12:38:07Z")

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Hi, this is something that normally is part of the CAD workflow, but having the posibility of cutting the CAD imported parts in half/quarters (at least by the reference planes) integrated in PrePoMax could be very interesting for simmetric parts.

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**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [March 12, 2024, 12:41pm UTC](https://prepomax.discourse.group/t/cut-cad-model-for-simmetry-modeling/1600/2 "2024-03-12T12:41:19Z")

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FreeCAD has interesting approach in this regard: [https://wiki.freecad.org/Part\_SectionCut](https://wiki.freecad.org/Part_SectionCut)

Basically, there’s a tool that internally performs a boolean cut with properly sized cube. This tool also serves as a workaround for the lack of section view feature that doesn’t make the solids look hollow.

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**Author:** ![SergioP1975](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/sergiop1975/32/37_2.png) [@SergioP1975](https://prepomax.discourse.group/u/SergioP1975)\
**Post date:** [March 12, 2024, 12:43pm UTC](https://prepomax.discourse.group/t/cut-cad-model-for-simmetry-modeling/1600/3 "2024-03-12T12:43:46Z")

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I was thinking in a similiar concept, having stored in somewere a big cube and doing a crude boolean cut.

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**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [March 12, 2024, 12:45pm UTC](https://prepomax.discourse.group/t/cut-cad-model-for-simmetry-modeling/1600/4 "2024-03-12T12:45:23Z")

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I must admit that this tool in FreeCAD fails sometimes due to the limitations of OCC boolean operations. But it’s really useful in general. Could be a problem with STL and shell models though.

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**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\
**Post date:** [March 12, 2024, 3:11pm UTC](https://prepomax.discourse.group/t/cut-cad-model-for-simmetry-modeling/1600/5 "2024-03-12T15:11:48Z")

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I think cutting a CAD geometry with a plane should also be possible.

For .stl files, I think I could use the VTK. It has many features for working with triangulated meshes.