# Strange shadow render

**URL:** <https://forums.sketchup.com/t/strange-shadow-render/260962>\
**Category:** V-Ray for SketchUp\
**Created:** [February 23, 2024, 12:45pm UTC](https://forums.sketchup.com/t/strange-shadow-render/260962 "2024-02-23T12:45:59Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![eee.lll](https://avatars.discourse-cdn.com/v4/letter/e/eb9ed0/32.png) [@eee.lll](https://forums.sketchup.com/u/eee.lll)\
**Post date:** [February 23, 2024, 12:45pm UTC](https://forums.sketchup.com/t/strange-shadow-render/260962/1 "2024-02-23T12:45:59Z")

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Hello, I am having issues with strange shadows while rendering. Can someone please explain what I do wrog? So frustrating 😩

 ![fail](https://global.discourse-cdn.com/sketchup/original/3X/8/3/8307a725ca5881d0b580f5a516e48378953f73cb.jpeg)

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**Author:** ![Anssi](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/anssi/32/105_2.png) [@Anssi](https://forums.sketchup.com/u/Anssi)\
**Post date:** [February 23, 2024, 12:47pm UTC](https://forums.sketchup.com/t/strange-shadow-render/260962/2 "2024-02-23T12:47:30Z")

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Post your model. My guess is that your model lies at an astronomical distance from the model origin.

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**Author:** ![mihai.s](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/mihai.s/32/202022_2.png) [@mihai.s](https://forums.sketchup.com/u/mihai.s)\
**Post date:** [February 23, 2024, 12:50pm UTC](https://forums.sketchup.com/t/strange-shadow-render/260962/3 "2024-02-23T12:50:42Z")

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You probably don’t have every object grouped correctly.

> [@Section cuts problems](https://forums.sketchup.com/t/section-cuts-problems/130363/18):
>
> Those artifacts that appear in rendering are probably related to multiple modeling errors: a multitude of hidden raw geometry reversed faces missing faces, overlapping surfaces incorrect use of groups and layers Normally all these modeling and working errors should be corrected and only then move to rendering. If you still want to continue with what you have at the moment, you could render and get rid of those artifacts …

> [@Vray 5.2 Sketchup 2019 Section/Clipper issue](https://forums.sketchup.com/t/vray-5-2-sketchup-2019-section-clipper-issue/192191/4):
>
> Of course it matters if you have correctly oriented faces. It matters when you render, it matters when you export to another format for other software, it matters when you apply textures, when you change geometry, etc… [Capture-06] Just read the topics in section V-Ray for SketchUp - [V-Ray for SketchUp - SketchUp Community](https://forums.sketchup.com/c/extending-sketchup/vray-for-sketchup/75) and you’ll see a lot of problems created by reversed faces and not knowing about them. Just an example: [Vray creating a Phantom face on section cut - #5 by AndrewRubySket…](https://forums.sketchup.com/t/vray-creating-a-phantom-face-on-section-cut/191807/5)

> [@Blank space or White/black patches in sketchup vray rendering](https://forums.sketchup.com/t/blank-space-or-white-black-patches-in-sketchup-vray-rendering/243005/9):
>
> Basics of SketchUp at [learn.sketchup.com](http://learn.sketchup.com) That’s why I asked. wink Forum search [Search results for 'v-ray raw geometry' - SketchUp Community](https://forums.sketchup.com/search?expanded=true&q=v-ray%20raw%20geometry)

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**Author:** ![Elmtec-Adam](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/elmtec-adam/32/120483_2.png) [@Elmtec-Adam](https://forums.sketchup.com/u/Elmtec-Adam)\
**Post date:** [February 23, 2024, 1:22pm UTC](https://forums.sketchup.com/t/strange-shadow-render/260962/4 "2024-02-23T13:22:25Z")

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Looking at patterns of the section cut - you have it on a wall?

Move it past the wall so there can be no confusion between whether the wall should be cut or not.