# Issue with eraser function

**URL:** <https://discourse.slicer.org/t/issue-with-eraser-function/43825>\
**Category:** Support\
**Created:** [July 23, 2025, 2:43pm UTC](https://discourse.slicer.org/t/issue-with-eraser-function/43825 "2025-07-23T14:43:20Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![noi9](https://avatars.discourse-cdn.com/v4/letter/n/f07891/32.png) [@noi9](https://discourse.slicer.org/u/noi9)\
**Post date:** [July 23, 2025, 2:43pm UTC](https://discourse.slicer.org/t/issue-with-eraser-function/43825/1 "2025-07-23T14:43:21Z")

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Hi,

Two issues which may be related.

1. When I used the eraser function, there is still faint markings left. It does not fully erase.

2. There appears to be artefact when I used the threshold button to fill out multiple different slice sections.

Any ideas on how to solve this?

Best,

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**Author:** ![SegmenterSam](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/segmentersam/32/80408_2.png) [@SegmenterSam](https://discourse.slicer.org/u/SegmenterSam)\
**Post date:** [July 23, 2025, 3:16pm UTC](https://discourse.slicer.org/t/issue-with-eraser-function/43825/2 "2025-07-23T15:16:36Z")

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Hi,  
Is it reproducable when you exit the program and do the same steps? Or does that fix the issue?

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**Author:** ![noi9](https://avatars.discourse-cdn.com/v4/letter/n/f07891/32.png) [@noi9](https://discourse.slicer.org/u/noi9)\
**Post date:** [July 23, 2025, 3:19pm UTC](https://discourse.slicer.org/t/issue-with-eraser-function/43825/3 "2025-07-23T15:19:47Z")

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Hi,

When exiting and restarting the system I still have the same problem.

I have not discovered a fix yet.

Kind regards,

Nachika

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**Author:** ![mau\_igna\_06](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mau_igna_06/32/9056_2.png) [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Post date:** [July 23, 2025, 3:29pm UTC](https://discourse.slicer.org/t/issue-with-eraser-function/43825/4 "2025-07-23T15:29:32Z")

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Please be sure the 2D views are not in a `reformat` state, see picture below:

 ![Screenshot from 2025-07-23 12-12-00_2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/0/009c26b91d4f212415ed7439122865d0682371dd.jpeg)

As you see, the lower arrow should point to “Axial” on the selector

HIH

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<div class="post-metadata">

**Author:** ![noi9](https://avatars.discourse-cdn.com/v4/letter/n/f07891/32.png) [@noi9](https://discourse.slicer.org/u/noi9)\
**Post date:** [July 24, 2025, 7:08am UTC](https://discourse.slicer.org/t/issue-with-eraser-function/43825/5 "2025-07-24T07:08:58Z")

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Hi,

I changed settings as you described and still no luck.

Kind regards,

Nachika

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [August 26, 2025, 2:33pm UTC](https://discourse.slicer.org/t/issue-with-eraser-function/43825/6 "2025-08-26T14:33:28Z")

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Do you still have this issue? It seems to me that you have more than one volumes loaded and maybe more than one segmentation node in the scene. It is important to select the appropriate source volume when you paint, because it only considers the extent of that volume and you cannot paint outside of it.