https://community.graphisoft.com/t5/Modeling/SEO-on-Mesh-by-Column-kills-Mesh/m-p/15604#M7391 <DIV class="actalk-migrated-content"><T>I am working on AC11 build 1114 on XP. I am trying to use SEO to cut remove a column from a mesh. This way it shows up correctly in section. However It Causes the polygon to fail and I get a Very Odd result. I get a "skin across the hole that was created. Any Ideas from anyone why this is happening, or what to do to fix. The only thing that I have found to do is to create a circular hole in the mesh and then fill it in with a circular mesh at the right height. This does show up correctly in section.</T></DIV><BR /><IMG src="http://community.graphisoft.com/t5/image/serverpage/image-id/75006iBA2317C11D167D81/image-size/large?v=v2&amp;px=999" border="0" alt="Mesh Problem.jpg" title="Mesh Problem.jpg" /> Thu, 25 May 2023 14:35:12 GMT Anonymous 2023-05-25T14:35:12Z https://community.graphisoft.com/t5/Modeling/SEO-on-Mesh-by-Column-kills-Mesh/m-p/15604#M7391 <DIV class="actalk-migrated-content"><T>I am working on AC11 build 1114 on XP. I am trying to use SEO to cut remove a column from a mesh. This way it shows up correctly in section. However It Causes the polygon to fail and I get a Very Odd result. I get a "skin across the hole that was created. Any Ideas from anyone why this is happening, or what to do to fix. The only thing that I have found to do is to create a circular hole in the mesh and then fill it in with a circular mesh at the right height. This does show up correctly in section.</T></DIV><BR /><IMG src="http://community.graphisoft.com/t5/image/serverpage/image-id/75006iBA2317C11D167D81/image-size/large?v=v2&amp;px=999" border="0" alt="Mesh Problem.jpg" title="Mesh Problem.jpg" /> Thu, 25 May 2023 14:35:12 GMT https://community.graphisoft.com/t5/Modeling/SEO-on-Mesh-by-Column-kills-Mesh/m-p/15604#M7391 Anonymous 2023-05-25T14:35:12Z https://community.graphisoft.com/t5/Modeling/SEO-on-Mesh-by-Column-kills-Mesh/m-p/15605#M7392 Try subtract with upward extrusion rather than subtract.<BR /> If the column is exactly the height of the mesh you<BR /> might get this result with simple subtraction.<BR /> Peter Devlin Thu, 24 Jan 2008 22:47:49 GMT https://community.graphisoft.com/t5/Modeling/SEO-on-Mesh-by-Column-kills-Mesh/m-p/15605#M7392 Anonymous 2008-01-24T22:47:49Z