# Polysurface offset

**URL:** <https://discourse.mcneel.com/t/polysurface-offset/200525>\
**Category:** Grasshopper\
**Tags:** windows\
**Created:** [February 28, 2025, 2:11pm UTC](https://discourse.mcneel.com/t/polysurface-offset/200525 "2025-02-28T14:11:32Z")\
**Posts on this page:** 1\
**Showing post:** 21

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**Author:** ![Piet1](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/piet1/32/651191_2.png) [@Piet1](https://discourse.mcneel.com/u/Piet1)\
**Post date:** [March 4, 2025, 7:34am UTC](https://discourse.mcneel.com/t/polysurface-offset/200525/21 "2025-03-04T07:34:04Z")

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Thank you Eric but unfortunately didn’t succed with this component as well.

Anyone that is felt in this kind of scenario and gained experience on this could suggest what the best procedure to get a decent result even if some small hybrid solution (bake, cut, merge) is needed?  
Any help from the experienced users?

I found this intresting but I wasn’t able to make it work.

> [@Offset Polysurface problem](https://discourse.mcneel.com/t/offset-polysurface-problem/143197/1):
>
> Hello, Is there an equivalent function to Grasshopper’s Cap Holes Ex in RhinoCommon? I only found Brep.CapPlanarholes. I am trying to create a solid offsetted Brep using a GH custom component, calling the Brep. CreateOffsetBrep method, choosing true for solid. The result is an open Brep. When I plug it into Cap Holes ex, it produces an invalid Brep. This is why I was looking for the equivalent method in RhinoCommon to try to debug it, or else see if there could be another way to Debug this? …

Any kind of help really appreciated

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