# A problem when use vtkSmoothPolyDataFilter

**URL:** https://discourse.vtk.org/t/a-problem-when-use-vtksmoothpolydatafilter/13478
**Category:** Support
**Created:** [March 7, 2024, 3:31pm UTC](https://discourse.vtk.org/t/a-problem-when-use-vtksmoothpolydatafilter/13478 "2024-03-07T15:31:21Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Huiying](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/h/e68b1a/32.png) [@Huiying](https://discourse.vtk.org/u/Huiying)
#### Post date: [March 7, 2024, 3:31pm UTC](https://discourse.vtk.org/t/a-problem-when-use-vtksmoothpolydatafilter/13478/1 "2024-03-07T15:31:21Z")

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Hello,  
I used the BooleanOperation to perform the difference between two almost vertical models. Now I want to smooth the edges between them (it’s too sharp right now).  
I use the vtkSmoothPolyDataFilter , which is good for smoothing the surface of the model, but the edges that touch are almost unchanged.  
Would like to ask how should I deal with this kind of problem? Use another module or am I ignoring some Settings?

 ![1](https://discourse.vtk.org/uploads/default/original/2X/6/6072b90a8ffc0d4816ec68353d3ad168aa7fc454.png)

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### Author: ![mwestphal](https://discourse.vtk.org/user_avatar/discourse.vtk.org/mwestphal/32/19_2.png) [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [March 7, 2024, 3:33pm UTC](https://discourse.vtk.org/t/a-problem-when-use-vtksmoothpolydatafilter/13478/2 "2024-03-07T15:33:12Z")

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@Charles_Gueunet