# Sometimes works?

**URL:** https://discourse.shapr3d.com/t/sometimes-works/6931
**Category:** Modeling Questions
**Created:** [March 23, 2020, 3:38am UTC](https://discourse.shapr3d.com/t/sometimes-works/6931 "2020-03-23T03:38:40Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![4monkeys](https://avatars.discourse-cdn.com/v4/letter/4/3bc359/32.png) [@4monkeys](https://discourse.shapr3d.com/u/4monkeys)
#### Post date: [March 23, 2020, 3:38am UTC](https://discourse.shapr3d.com/t/sometimes-works/6931/1 "2020-03-23T03:38:40Z")

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Hi! The only thing I use my printer is for making cookie cutters. I design each of them the same way, with the same thicknesses, heights, etc. Sometimes the tools (shell, extrude, offset) works and sometimes it doesn’t. I check that there aren’t any gaps and my sketches turn blue. Any suggestions/ helps would be great!

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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: [March 24, 2020, 9:20am UTC](https://discourse.shapr3d.com/t/sometimes-works/6931/2 "2020-03-24T09:20:36Z")

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Hi @4monkeys

Can you post a screenshot of the issue?