# The stl format file import can't be merged and boolean. How many functions do you want to delete?

**URL:** <https://discourse.shapr3d.com/t/the-stl-format-file-import-cant-be-merged-and-boolean-how-many-functions-do-you-want-to-delete/26683>\
**Category:** Share your creations\
**Created:** [July 10, 2023, 8:32am UTC](https://discourse.shapr3d.com/t/the-stl-format-file-import-cant-be-merged-and-boolean-how-many-functions-do-you-want-to-delete/26683 "2023-07-10T08:32:45Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![martinchou](https://avatars.discourse-cdn.com/v4/letter/m/e9a140/32.png) [@martinchou](https://discourse.shapr3d.com/u/martinchou)\
**Post date:** [July 10, 2023, 8:32am UTC](https://discourse.shapr3d.com/t/the-stl-format-file-import-cant-be-merged-and-boolean-how-many-functions-do-you-want-to-delete/26683/1 "2023-07-10T08:32:45Z")

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I don’t understand it more and more

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**Author:** ![martinchou](https://avatars.discourse-cdn.com/v4/letter/m/e9a140/32.png) [@martinchou](https://discourse.shapr3d.com/u/martinchou)\
**Post date:** [July 10, 2023, 8:36am UTC](https://discourse.shapr3d.com/t/the-stl-format-file-import-cant-be-merged-and-boolean-how-many-functions-do-you-want-to-delete/26683/2 "2023-07-10T08:36:15Z")

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![IMG_6835](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/a/f/af8ff8169b94db64764c2a150d77778751901a7e.jpeg)

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [July 10, 2023, 8:39am UTC](https://discourse.shapr3d.com/t/the-stl-format-file-import-cant-be-merged-and-boolean-how-many-functions-do-you-want-to-delete/26683/3 "2023-07-10T08:39:53Z")

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Hi @martinchou , we didn’t delete any function from Shapr3D. Probably the imported mesh is broken. Working with mesh data in a CAD system is not ideal, we support mesh files mostly as reference geometries.

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**Author:** ![martinchou](https://avatars.discourse-cdn.com/v4/letter/m/e9a140/32.png) [@martinchou](https://discourse.shapr3d.com/u/martinchou)\
**Post date:** [July 10, 2023, 11:26am UTC](https://discourse.shapr3d.com/t/the-stl-format-file-import-cant-be-merged-and-boolean-how-many-functions-do-you-want-to-delete/26683/4 "2023-07-10T11:26:27Z")

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After the original version of the application has been deleted, it is ok again. No wonder there will be an error uploading file.

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**Author:** ![martinchou](https://avatars.discourse-cdn.com/v4/letter/m/e9a140/32.png) [@martinchou](https://discourse.shapr3d.com/u/martinchou)\
**Post date:** [July 10, 2023, 11:36am UTC](https://discourse.shapr3d.com/t/the-stl-format-file-import-cant-be-merged-and-boolean-how-many-functions-do-you-want-to-delete/26683/5 "2023-07-10T11:36:54Z")

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In addition, I hope that I can draw sketches as before when I isolate files alone, and I hope to return to the function. After all, I basically use iPad to model now, and I hardly use PC.