https://community.graphisoft.com/t5/Modeling/Trim-wall-to-stair/m-p/228673#M122822 I have split it into a new topic as it really has nothing to do with you other post.<BR /> <BR /> If the wall is under the stair then you can try a Solid Element Operation with the stair as the operator and the wall the target.<BR /> Subtract with downward extrusion.<BR /> <BR /> If that does not work (some stairs are not scripted as solid elements) or the wall is not under the stair then place roof, slab and/or morph to get the cutting shape you want and do the same as above.<BR /> Then hide the operators in a layer that you can turn off (don't delete them as there will be no SEO then).<BR /> <BR /> As for the hole for the door just use an empty door opening.<BR /> <BR /> Barry. Tue, 13 Sep 2016 01:04:05 GMT Barry Kelly 2016-09-13T01:04:05Z https://community.graphisoft.com/t5/Modeling/Trim-wall-to-stair/m-p/228672#M122821 <DIV class="actalk-migrated-content"><T>Not start a new topic<BR /> I continue next step, how i can cut slice by the stairs and hole in to the wall?</T></DIV><BR /><span class="lia-inline-image-display-wrapper" image-alt="jp2.png" style="width: 999px;"><img src="https://community.graphisoft.com/t5/image/serverpage/image-id/12751i076C4B34BE4D82E5/image-size/large?v=v2&amp;px=999" role="button" title="jp2.png" alt="jp2.png" /></span> Tue, 09 May 2023 14:20:23 GMT https://community.graphisoft.com/t5/Modeling/Trim-wall-to-stair/m-p/228672#M122821 Anonymous 2023-05-09T14:20:23Z https://community.graphisoft.com/t5/Modeling/Trim-wall-to-stair/m-p/228673#M122822 I have split it into a new topic as it really has nothing to do with you other post.<BR /> <BR /> If the wall is under the stair then you can try a Solid Element Operation with the stair as the operator and the wall the target.<BR /> Subtract with downward extrusion.<BR /> <BR /> If that does not work (some stairs are not scripted as solid elements) or the wall is not under the stair then place roof, slab and/or morph to get the cutting shape you want and do the same as above.<BR /> Then hide the operators in a layer that you can turn off (don't delete them as there will be no SEO then).<BR /> <BR /> As for the hole for the door just use an empty door opening.<BR /> <BR /> Barry. Tue, 13 Sep 2016 01:04:05 GMT https://community.graphisoft.com/t5/Modeling/Trim-wall-to-stair/m-p/228673#M122822 Barry Kelly 2016-09-13T01:04:05Z