# visualization of STL surface orientation flipped between machines

**URL:** https://discourse.slicer.org/t/visualization-of-stl-surface-orientation-flipped-between-machines/24148
**Category:** Support
**Created:** [July 1, 2022, 7:25pm UTC](https://discourse.slicer.org/t/visualization-of-stl-surface-orientation-flipped-between-machines/24148 "2022-07-01T19:25:49Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [July 1, 2022, 7:40pm UTC](https://discourse.slicer.org/t/visualization-of-stl-surface-orientation-flipped-between-machines/24148/2 "2022-07-01T19:40:18Z")

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Probably you have different slicer versions. Check this information for guidance:

> [@Exported STL files dont match view in Slicer](https://discourse.slicer.org/t/exported-stl-files-dont-match-view-in-slicer/16441/2):
>
> Slicer now reads all files in LPS coordinate system. Before Slicer-4.11, it expected STL files to be in RAS coordinate system by default. See more information about how to avoid RAS/LPS mismatch in the [migration guide](https://www.slicer.org/wiki/Documentation/Nightly/Developers/Tutorials/MigrationGuide/Slicer#Slicer_5.0:_Models_are_saved_in_LPS_coordinate_system_by_default). If there is no LPS/RAS issue but slight position and/or orientation differences then most likely that other software does not properly take into account image origin, spacing, or axis directions of the input volume.

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_[View the full topic](https://discourse.slicer.org/t/visualization-of-stl-surface-orientation-flipped-between-machines/24148)._