# Cant subtract shap from an impoorted mesh anymore

**URL:** <https://discourse.shapr3d.com/t/cant-subtract-shap-from-an-impoorted-mesh-anymore/17307>\
**Category:** Modeling Questions\
**Created:** [February 9, 2022, 7:37am UTC](https://discourse.shapr3d.com/t/cant-subtract-shap-from-an-impoorted-mesh-anymore/17307 "2022-02-09T07:37:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![selektha](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@selektha](https://discourse.shapr3d.com/u/selektha)\
**Post date:** [February 9, 2022, 7:37am UTC](https://discourse.shapr3d.com/t/cant-subtract-shap-from-an-impoorted-mesh-anymore/17307/1 "2022-02-09T07:37:00Z")

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Since this morning I cant subtract an object created in shapr3d from a imported STL file.  
Yesterday it worked perfectly, now I needed to resize the shapr3d object as I use as cutting tool and it now refuses to work and this is not the first time this happens, I get the feeling the subtract tool is a bit buggy sometimes or maybe just unpolished, same with a couple of other tools(loft and sweep) and it really frustrates me as I more or less rely on these tools for my design process.

Anyone have tips and tricks for getting the subtract tool to work consistently?

 ![Skärmbild (23)](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/2/21085585740c6b78e8510c0653fb088ff624a941.jpeg)

These kind of bugs/unpolished behavior in the tooling has actually made me cancel my auto renew of my license as I dont hink these issues should be in a premium product at a premium price, I dont know if I have the wrong perception for who shapr3D is intended for but right now it is quite frustrating to work with sometimes.

Dont get me wrong I love the software but at the price point it honestly expect more.

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**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [February 9, 2022, 8:17am UTC](https://discourse.shapr3d.com/t/cant-subtract-shap-from-an-impoorted-mesh-anymore/17307/2 "2022-02-09T08:17:37Z")

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Hi,

Could you contact our support team at [support@sharpr3d.com](mailto:support@sharpr3d.com) and provide the workspace in .shapr format? We would like to investigate the issue.

Usually the problem is, that at some point in the model, a 0 thickness face would be generated, which isn’t supported, but we would need to see the model to know for sure.

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**Author:** ![dsloyer](https://avatars.discourse-cdn.com/v4/letter/d/4bbf92/32.png) [@dsloyer](https://discourse.shapr3d.com/u/dsloyer)\
**Post date:** [May 29, 2025, 1:01am UTC](https://discourse.shapr3d.com/t/cant-subtract-shap-from-an-impoorted-mesh-anymore/17307/3 "2025-05-29T01:01:19Z")

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Same issue, never occurred previously. Mesh and Object are overlapping but can no longer cut the mesh.

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**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [May 29, 2025, 4:02am UTC](https://discourse.shapr3d.com/t/cant-subtract-shap-from-an-impoorted-mesh-anymore/17307/4 "2025-05-29T04:02:08Z")

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Check if your STL is solid, if there is a hole somewhere you can’t boolean.