# Strange sketching behavior or just me being stupid?

**URL:** <https://discourse.shapr3d.com/t/strange-sketching-behavior-or-just-me-being-stupid/23928>\
**Category:** Modeling Questions\
**Created:** [February 3, 2023, 3:29pm UTC](https://discourse.shapr3d.com/t/strange-sketching-behavior-or-just-me-being-stupid/23928 "2023-02-03T15:29:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Alex71](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Alex71](https://discourse.shapr3d.com/u/Alex71)\
**Post date:** [February 3, 2023, 3:29pm UTC](https://discourse.shapr3d.com/t/strange-sketching-behavior-or-just-me-being-stupid/23928/1 "2023-02-03T15:29:33Z")

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I know STL Files are a pain to work with, but here comes my question: I imported a STL file, cut it in half and tried to draw a sketch on that plane (basically copying the cutline from the underlying Mesh Body). Problem was, there was no white point (sketching cursor) and therefore no sketching possible. Only when I move my cursor outside the mesh body section is sketching possible again…  
So far so bad, after restarting my Mac (Mac Mini M2pro running Ventura) everything just worked again like a charm! I have experienced this behavior now over the last couple of days and I just can’t get my head around what the reason could be for this erratic behavior… Could you give me a hint?