# Boolean operation error

**URL:** <https://discourse.shapr3d.com/t/boolean-operation-error/32832>\
**Category:** Feature requests\
**Created:** [July 12, 2024, 7:04am UTC](https://discourse.shapr3d.com/t/boolean-operation-error/32832 "2024-07-12T07:04:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![VASCONSSA84](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/vasconssa84/32/27313_2.png) [@VASCONSSA84](https://discourse.shapr3d.com/u/VASCONSSA84)\
**Post date:** [July 12, 2024, 7:04am UTC](https://discourse.shapr3d.com/t/boolean-operation-error/32832/1 "2024-07-12T07:04:41Z")

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Hello. I am making a model in Sharpr3D. I have a problem: I have several objects intersecting with a single object (an STL of a digital elevation model). I want to subtract the DEM using the subtract tool, but an error message appears saying there was a boolean operation error. When I select only a few models, it seems to work, while with others it doesn’t. All bodies have sketches on the same plane. What could be happening?

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**Author:** ![Rita](https://avatars.discourse-cdn.com/v4/letter/r/58956e/32.png) [@Rita](https://discourse.shapr3d.com/u/Rita)\
**Post date:** [July 12, 2024, 7:52am UTC](https://discourse.shapr3d.com/t/boolean-operation-error/32832/2 "2024-07-12T07:52:30Z")

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Hey, please send us the design [here](https://support.shapr3d.com/hc/en-us/requests/new), and we’ll take a look! Thanks