# Aligning Cutout Offset After BVH Subtraction
**URL:** https://discourse.threejs.org/t/aligning-cutout-offset-after-bvh-subtraction/69265
**Category:** Questions
**Tags:** positioning, mesh, three-mesh-bvh, geometry
**Created:** [August 13, 2024, 7:10pm UTC](https://discourse.threejs.org/t/aligning-cutout-offset-after-bvh-subtraction/69265 "2024-08-13T19:10:12Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Fizzy](https://discourse.threejs.org/u/Fizzy)
#### Post date: [August 13, 2024, 7:10pm UTC](https://discourse.threejs.org/t/aligning-cutout-offset-after-bvh-subtraction/69265/1 "2024-08-13T19:10:12Z")
Does anyone know how to adjust the offset of the cutout to align correctly after using the BVH Operation SUBTRACTION function?
In the image, the green represents the original position, and the white cutout shows where it was placed.
Any assistance would be greatly appreciated!
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### Author:  [@manthrax](https://discourse.threejs.org/u/manthrax)
#### Post date: [August 15, 2024, 5:54am UTC](https://discourse.threejs.org/t/aligning-cutout-offset-after-bvh-subtraction/69265/2 "2024-08-15T05:54:24Z")
Are you using: [GitHub - gkjohnson/three-bvh-csg: A flexible, memory compact, fast and dynamic CSG implementation on top of three-mesh-bvh](https://github.com/gkjohnson/three-bvh-csg)
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### Author:  [@Fizzy](https://discourse.threejs.org/u/Fizzy)
#### Post date: [August 15, 2024, 2:49pm UTC](https://discourse.threejs.org/t/aligning-cutout-offset-after-bvh-subtraction/69265/3 "2024-08-15T14:49:01Z")
Yes, I am using that GitHub library