# \#inverse

**URL:** https://forums.sketchup.com/tag/inverse/1400.md

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## [Skew transformation inverse Issue when constructed with axes Method](https://forums.sketchup.com/t/skew-transformation-inverse-issue-when-constructed-with-axes-method/49766)

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**Author:** [@BruceYoung](https://forums.sketchup.com/u/BruceYoung)\
**Replies:** 3\
**Last updated:** [August 21, 2017, 12:22pm UTC](https://forums.sketchup.com/t/skew-transformation-inverse-issue-when-constructed-with-axes-method/49766 "2017-08-21T12:22:04Z")

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I am seeing the Geom::Transformation class’s inverse method not work correctly for a specific skew/shear situation. The Ruby code I am working with italicizes some text in the X-Y plane with the following transformation…

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## [Unable to derive negative/ inverse shell](https://forums.sketchup.com/t/unable-to-derive-negative-inverse-shell/50035)

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**Author:** [@Vasundhara](https://forums.sketchup.com/u/Vasundhara)\
**Replies:** 4\
**Last updated:** [August 16, 2017, 9:27am UTC](https://forums.sketchup.com/t/unable-to-derive-negative-inverse-shell/50035 "2017-08-16T09:27:33Z")

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Hi! So I’ve been trying to derive an inverse shell/ negative of a not so straighforward door handle so that the same can be given for 3D printing. I seem to be unable to intersect the object with another. Sketchup keeps …