# Can’t extrude simple outline

**URL:** <https://discourse.shapr3d.com/t/can-t-extrude-simple-outline/1884>\
**Category:** Modeling Questions\
**Created:** [December 22, 2017, 4:45pm UTC](https://discourse.shapr3d.com/t/can-t-extrude-simple-outline/1884 "2017-12-22T16:45:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![deets](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/deets/32/594_2.png) [@deets](https://discourse.shapr3d.com/u/deets)\
**Post date:** [December 22, 2017, 4:45pm UTC](https://discourse.shapr3d.com/t/can-t-extrude-simple-outline/1884/1 "2017-12-22T16:45:03Z")

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I’ve created a simple sketch for a wall mounted case. See attached [lunos.shapr](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/b8c9230959ddf47498e98a4be3635d4b3907bd93.shapr) (1.0 MB)

I want to extrude the bottom exempt the large oval hole and mounting holes to form a 3mm bottom. Then I want to extract the offset wall to to full 25mm

I miserably fail. I can either extrude the wall. The I can’t hilight the inner parts of the sketch anymore. Or I can extrude the bottom. I then can’t select or extrude the wall. Sketching on top of the bottom extrusion by trying to create a offset also fails, it always adds the whole bottom part to the sketch.

Any suggestions?

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**Author:** ![deets](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/deets/32/594_2.png) [@deets](https://discourse.shapr3d.com/u/deets)\
**Post date:** [December 22, 2017, 4:50pm UTC](https://discourse.shapr3d.com/t/can-t-extrude-simple-outline/1884/2 "2017-12-22T16:50:28Z")

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And another remark: it used to be that when entering a number manually (eg when offsetting) the sign was preserved. Now it always becomes positive whenever I enter a number.

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [December 22, 2017, 10:56pm UTC](https://discourse.shapr3d.com/t/can-t-extrude-simple-outline/1884/3 "2017-12-22T22:56:53Z")

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Hide the body, and the filling will appear. We hide those sketch fillings that are over a hole, because it would be really confusing, but this is an interesting case, because in such cases we should definitely show it. We will tweak it further.