# Irruptions on model surface

**URL:** http://forum.3dprintbeginner.com/t/irruptions-on-model-surface/1491
**Category:** Other Topics
**Created:** [June 25, 2023, 8:00am UTC](http://forum.3dprintbeginner.com/t/irruptions-on-model-surface/1491 "2023-06-25T08:00:44Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Vagulus](http://forum.3dprintbeginner.com/letter_avatar_proxy/v4/letter/v/db5fbb/32.png) [@Vagulus](http://forum.3dprintbeginner.com/u/Vagulus)
#### Post date: [June 25, 2023, 8:00am UTC](http://forum.3dprintbeginner.com/t/irruptions-on-model-surface/1491/1 "2023-06-25T08:00:45Z")

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![230624_Finish Problems](http://forum.3dprintbeginner.com/uploads/default/original/1X/6b7cdd584d8630037311211c9586ff55a5f5f58e.jpeg)  
My printed model has pimples all over the surface. Can someone tell me what causes this?

Thanks

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<div class="post-metadata">

### Author: ![Vagulus](http://forum.3dprintbeginner.com/letter_avatar_proxy/v4/letter/v/db5fbb/32.png) [@Vagulus](http://forum.3dprintbeginner.com/u/Vagulus)
#### Post date: [June 27, 2023, 7:29am UTC](http://forum.3dprintbeginner.com/t/irruptions-on-model-surface/1491/2 "2023-06-27T07:29:05Z")

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I found a solution here:

```auto
(https://www.simplify3d.com/resources/print-quality-troubleshooting/blobs-and-zits/)

```

## Common Solutions

### Retraction and coasting settings

Extra Restart Distance (reduced)