# Exporting a contour in BMP, JPG, PNG formats from of an specific plane of a 3D phantom in an STL file

**URL:** <https://discourse.slicer.org/t/exporting-a-contour-in-bmp-jpg-png-formats-from-of-an-specific-plane-of-a-3d-phantom-in-an-stl-file/39920>\
**Category:** Support\
**Created:** [October 29, 2024, 2:32pm UTC](https://discourse.slicer.org/t/exporting-a-contour-in-bmp-jpg-png-formats-from-of-an-specific-plane-of-a-3d-phantom-in-an-stl-file/39920 "2024-10-29T14:32:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ileana](https://avatars.discourse-cdn.com/v4/letter/i/f1d935/32.png) [@Ileana](https://discourse.slicer.org/u/Ileana)\
**Post date:** [October 29, 2024, 2:32pm UTC](https://discourse.slicer.org/t/exporting-a-contour-in-bmp-jpg-png-formats-from-of-an-specific-plane-of-a-3d-phantom-in-an-stl-file/39920/1 "2024-10-29T14:32:05Z")

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Hello 3D slicer community. I have an stl file of a mouse phantom (half of the phantom) and I need to extract the contour of the bottom edge of the phantom and export it as BMP, JPG, PNG, I need the actual dimensions to be maintained as I need the contour to laser cut some gafchromic films, that will be later place within the phantom. Could you please advise?  
Thank you  
Ileana