# Grow mask function

**URL:** <https://forum.nomadsculpt.com/t/grow-mask-function/11129>\
**Category:** Feature Request\
**Created:** [May 22, 2023, 8:21pm UTC](https://forum.nomadsculpt.com/t/grow-mask-function/11129 "2023-05-22T20:21:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ray](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.nomadsculpt.com/ray/32/23707_2.png) [@ray](https://forum.nomadsculpt.com/u/ray)\
**Post date:** [May 22, 2023, 8:21pm UTC](https://forum.nomadsculpt.com/t/grow-mask-function/11129/1 "2023-05-22T20:21:55Z")

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I know this was requested a year ago already but maybe it got buried, and I think it’s quite an important feature.

(and probably quick to implement, it’s just blur+add existing mask)

my dreamy vision: 🤓  
 ![grafik](https://europe1.discourse-cdn.com/flex005/uploads/nomadsculpt/original/3X/6/7/675fd08425bb4e26238cb1cd0e6590fabdc2e961.png)

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**Author:** ![Holger\_Schoenischka](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.nomadsculpt.com/holger_schoenischka/32/3934_2.png) [@Holger\_Schoenischka](https://forum.nomadsculpt.com/u/Holger_Schoenischka)\
**Post date:** [May 22, 2023, 9:11pm UTC](https://forum.nomadsculpt.com/t/grow-mask-function/11129/2 "2023-05-22T21:11:54Z")

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That would be a fantastic thing, but unfortunately I don’t think that will work. It would require something like a +/- offset and such an offset does not seem to work. But let’s wait and see.

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<div class="post-metadata">

**Author:** ![ray](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.nomadsculpt.com/ray/32/23707_2.png) [@ray](https://forum.nomadsculpt.com/u/ray)\
**Post date:** [May 22, 2023, 9:30pm UTC](https://forum.nomadsculpt.com/t/grow-mask-function/11129/3 "2023-05-22T21:30:37Z")

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In ZBrush “Grow mask” is just a blur that adds back the existing mask, no radius or offset or anything. That would be more than enough.

So it’s almost like a normal blur but the important difference is that already masked areas don’t become any less masked, which is what happens with the normal blur.

demo normal blur:

[https://europe1.discourse-cdn.com/flex005/uploads/nomadsculpt/original/3X/2/3/2343ed489cd0d47a1b4d887d230e521c05a5a49f.mp4](https://europe1.discourse-cdn.com/flex005/uploads/nomadsculpt/original/3X/2/3/2343ed489cd0d47a1b4d887d230e521c05a5a49f.mp4)

demo grow mask:

[https://europe1.discourse-cdn.com/flex005/uploads/nomadsculpt/original/3X/5/c/5ce8e400a8c4cf2806aea2de175ac964d550f5f9.mp4](https://europe1.discourse-cdn.com/flex005/uploads/nomadsculpt/original/3X/5/c/5ce8e400a8c4cf2806aea2de175ac964d550f5f9.mp4)

Btw Zbrush shrink is also just invert mask → grow mask → invert mask