# Intersecting a face problems **URL:** \ **Category:** SketchUp\ **Created:** [June 22, 2015, 9:35am UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337 "2015-06-22T09:35:04Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![w\_g\_hall98](https://avatars.discourse-cdn.com/v4/letter/w/b2d939/32.png) [@w\_g\_hall98](https://forums.sketchup.com/u/w_g_hall98)\ **Post date:** [June 22, 2015, 9:35am UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337/1 "2015-06-22T09:35:04Z")
I know how to use intersecting with model to cut through faces however I have this problem in one of my models where it wont intersect no matter what I try. I’ve tried freddo visuhole and it doesn’t work either. ![](https://global.discourse-cdn.com/sketchup/original/2X/0/02688f0d44d4ef67ed8d5eb37024fb6840469ef5.JPG) ---
**Author:** ![Box](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/box/32/235164_2.png) [@Box](https://forums.sketchup.com/u/Box)\ **Post date:** [June 22, 2015, 9:47am UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337/2 "2015-06-22T09:47:28Z")
The image doesn’t help us work out the problem very well. Can you attached the model, or at least the pieces you want to intersect. ---
**Author:** ![john\_drivenupthewall](https://avatars.discourse-cdn.com/v4/letter/j/c67d28/32.png) [@john\_drivenupthewall](https://forums.sketchup.com/u/john_drivenupthewall)\ **Post date:** [June 22, 2015, 9:48am UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337/3 "2015-06-22T09:48:07Z")
Copy/Paste the offending items into a new drawing, and post the skp so others can see what’s happening… @Box, beat me to it… ---
**Author:** ![w\_g\_hall98](https://avatars.discourse-cdn.com/v4/letter/w/b2d939/32.png) [@w\_g\_hall98](https://forums.sketchup.com/u/w_g_hall98)\ **Post date:** [June 22, 2015, 9:54am UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337/4 "2015-06-22T09:54:35Z")
In the original image i want to intersect the cylinder with the profile, this works if i copy the two into a different model (as shown in second image) but wont in my main model. ![](https://global.discourse-cdn.com/sketchup/original/2X/7/713b63f47653209336310b93431c008342a5df63.JPG) ---
**Author:** ![Wo3Dan](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/wo3dan/32/7450_2.png) [@Wo3Dan](https://forums.sketchup.com/u/Wo3Dan)\ **Post date:** [June 22, 2015, 10:34am UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337/5 "2015-06-22T10:34:31Z")
> [@w\_g\_hall98](#): > > n the original image i want to intersect the cylinder with the profile, this works if i copy the two into a different model (as shown in second image) but wont in my main model. So if the new model works as expected and the original doesn’t, attach the original. (See previous requests for the file by @Box and @john_drivenupthewall.) ---
**Author:** ![Geo](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/geo/32/82_2.png) [@Geo](https://forums.sketchup.com/u/Geo)\ **Post date:** [June 22, 2015, 10:49am UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337/6 "2015-06-22T10:49:14Z")
> [@w\_g\_hall98](#): > > this works if i copy the two into a different model (as shown in second image) but wont in my main model. To an experienced modeler, there is no definitive evidence in the second image that the profile has been cut. Lines of intersection form within the modeling context in which the intersect command is executed. Thus, if you wish to cut the faces of the corrugated profile you need to execute the intersect command while within their editing context. • Select the raw geometry of the cylinder \> Edit \> Cut • Then edit the group which holds the geometry of the corrugated profile. Be certain you’re in the modeling context of the faces you wish to cut. That is, you should be able to select an individual edge or face of the profile. • Now … Edit \> Paste in Place • Then … Right context click on the still selected cylinder geometry \> Intersect Faces \> With Context ---
**Author:** ![w\_g\_hall98](https://avatars.discourse-cdn.com/v4/letter/w/b2d939/32.png) [@w\_g\_hall98](https://forums.sketchup.com/u/w_g_hall98)\ **Post date:** [June 22, 2015, 10:54am UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337/7 "2015-06-22T10:54:13Z")
I have managed to fix the problem, i think it was down to the complexity of my model that the cylinder was intersecting with the wrong things. I moved the profile into an empty workspace and redid the intersect and this time it worked. ---
**Author:** ![Geo](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/geo/32/82_2.png) [@Geo](https://forums.sketchup.com/u/Geo)\ **Post date:** [June 22, 2015, 12:07pm UTC](https://forums.sketchup.com/t/intersecting-a-face-problems/12337/8 "2015-06-22T12:07:43Z")
> [@w\_g\_hall98](#): > > …the cylinder was intersecting with the wrong things. Again, @w_g_hall98 Lines of intersection only form within the modeling context in which the intersect command is executed. Said another way… To cut faces with lines of intersection; first you must be able to select the faces. Intersect Faces provides three options to control what interacts/intersects with what. • With Model • With Context • With Selection In a complex model comprised of many groups, intersecting With Model or With Selection has the potential to create mass amounts of stray/unwanted geometry. However, notice Intersect Faces \> With Context is only available while editing a group. Intersect Faces \> With Context thereby limits the geometry that may interact/intersect to that within the group.