# Can't extrude outer part of offset **URL:** \ **Category:** Modeling Questions\ **Created:** [May 8, 2021, 8:09pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688 "2021-05-08T20:09:45Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![jonlangager](https://avatars.discourse-cdn.com/v4/letter/j/fbc32d/32.png) [@jonlangager](https://discourse.shapr3d.com/u/jonlangager)\ **Post date:** [May 8, 2021, 8:09pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/1 "2021-05-08T20:09:45Z")
I have a box, and I am looking to make it hollow using the offset and extrude tools. However – instead offsetting the edge and then pushing down the inner section, I would like to pull up the outer section. However, it won’t let me select just the outer section. If I tap on the outer section, it simply selects the entire top of the box. Any advice on this? Thanks! ---
**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\ **Post date:** [May 8, 2021, 8:22pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/2 "2021-05-08T20:22:54Z")
tap the surface of the box, chose add plane. Project the outer face you want to extrude and project it to the plane. Then extrude that into a new body and then union the 2 bodies. You may have to hide the first body to select and extrude the projection. ---
**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\ **Post date:** [May 8, 2021, 8:35pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/3 "2021-05-08T20:35:20Z")
There are several ways to do this ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/3/33f034ba2f710f0c17ae541a2da4f3ded4ad27a2.jpeg) ---
**Author:** ![jonlangager](https://avatars.discourse-cdn.com/v4/letter/j/fbc32d/32.png) [@jonlangager](https://discourse.shapr3d.com/u/jonlangager)\ **Post date:** [May 8, 2021, 9:01pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/4 "2021-05-08T21:01:27Z")
Thanks! But it’s a little more complicated than I described… In the picture, I’m trying to pull up the outer edge of the box. Projecting it onto the plane gives me the same problem… I can’t select the outer area, so it won’t project onto the plane. ![shapr photo 2](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/5/59929b664c2d9eb8a7a0f120cbcf1732e0a83db1.jpeg) ---
**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\ **Post date:** [May 8, 2021, 9:36pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/5 "2021-05-08T21:36:55Z")
Sorry, not seeing/understanding outer area. Oh wait you mean the 4 outer edges top of the box? ---
**Author:** ![jonlangager](https://avatars.discourse-cdn.com/v4/letter/j/fbc32d/32.png) [@jonlangager](https://discourse.shapr3d.com/u/jonlangager)\ **Post date:** [May 8, 2021, 9:50pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/6 "2021-05-08T21:50:31Z")
The section colored with red in the pic below. Just trying to extrude it up… not sure why it’s proving so complicated! Thanks. ![IMG_0040](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/4/4ca5fe272dd1178fe28ff211a7735534e7c58d2f.jpeg) ---
**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\ **Post date:** [May 8, 2021, 11:11pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/7 "2021-05-08T23:11:09Z")
Select the outside edges and you should be able to project them as well. The outermost edges of the body. Just the edges not the face. ---
**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\ **Post date:** [May 8, 2021, 11:16pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/8 "2021-05-08T23:16:39Z")
See my selections to project to plane. ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/6/6de7ff00cad76e95a0ebb8640844cc051179c711.jpeg) ---
**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\ **Post date:** [May 8, 2021, 11:22pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/9 "2021-05-08T23:22:32Z")
Once you have the lines projected, make the main body invisible or selecting the desired face isn’t easy. Once you extrude the new face make visible and union the 2 bodies. ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/5/5dffabf764e74653de95e770f7af3199d9cff19e.jpeg) ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/5/54bbd494c20d605fe65e1aba3ebaf821983f66c6.jpeg) ---
**Author:** ![jonlangager](https://avatars.discourse-cdn.com/v4/letter/j/fbc32d/32.png) [@jonlangager](https://discourse.shapr3d.com/u/jonlangager)\ **Post date:** [May 8, 2021, 11:29pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/10 "2021-05-08T23:29:19Z")
This works great, thanks! Shame that you can’t just select the area and extrude 😕 ---
**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\ **Post date:** [May 8, 2021, 11:48pm UTC](https://discourse.shapr3d.com/t/cant-extrude-outer-part-of-offset/12688/11 "2021-05-08T23:48:46Z")
There might an easier way. Kind of counterintuitive but it works. Other programs a face can project to next sketch IIRC.