# 0.001 mm error
**URL:** https://discourse.shapr3d.com/t/0-001-mm-error/14966
**Category:** Modeling Questions
**Created:** [September 20, 2021, 5:58am UTC](https://discourse.shapr3d.com/t/0-001-mm-error/14966 "2021-09-20T05:58:05Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Farahbod](https://discourse.shapr3d.com/u/Farahbod)
#### Post date: [September 20, 2021, 5:58am UTC](https://discourse.shapr3d.com/t/0-001-mm-error/14966/1 "2021-09-20T05:58:05Z")
My software started showing an abnormal error.
The distance between two parts are 50 mm but software sometimes shows it 50.001 or 49.999
this happens when i find the mid plane betweens two objects and mirror my parts.
Now my software is too slow and even to select a part i need to wait for 10 seconds.
I am using Ipad pro 2020 running ios 14.8 and my shapr3d is the latest version.
I am really struggling with this lagging software and the errors that affect the accuracy of my design.
Is there any solution?
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### Author:  [@Istvan](https://discourse.shapr3d.com/u/Istvan)
#### Post date: [September 20, 2021, 9:46am UTC](https://discourse.shapr3d.com/t/0-001-mm-error/14966/2 "2021-09-20T09:46:14Z")
can you share the problematic file in .shapr format here or if it’s confidential send it to [support@shapr3d.com](mailto:support@shapr3d.com)?