# Cut corner on cube
**URL:** https://discourse.shapr3d.com/t/cut-corner-on-cube/16844
**Category:** Modeling Questions
**Created:** [January 12, 2022, 9:05am UTC](https://discourse.shapr3d.com/t/cut-corner-on-cube/16844 "2022-01-12T09:05:35Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@jnygaard.dk](https://discourse.shapr3d.com/u/jnygaard.dk)
#### Post date: [January 12, 2022, 9:05am UTC](https://discourse.shapr3d.com/t/cut-corner-on-cube/16844/1 "2022-01-12T09:05:35Z")
Hi.
I need to do an operation, that’s similar to cutting the corner of a cube, but can’t see an easy way to do this.
Draw a cube.
Draw a line from corner to corner on top side
On 2 vertical side connected to that and connected to each other, draw lines diagonal too. Meeting in the bottom corner and starting from each end of the line on the top.
You should now a cube with 3 sides cut in half. How do you removed that triangle/cone that formes?
I can’t seem to be able to simply delete it. Not the lines, nor the 3 faces.
I can’t modify the dimension on the corner line, that needs to become zero. I can scale it, it modifies the whole cube top surface, not just the triangle half.
I suppose it can be done with extrude/subtract, but there gotta be a better way? Please help
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### Author:  [@LarsG](https://discourse.shapr3d.com/u/LarsG)
#### Post date: [January 12, 2022, 9:52am UTC](https://discourse.shapr3d.com/t/cut-corner-on-cube/16844/2 "2022-01-12T09:52:29Z")
Hi, something like this?
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### Author:  [@jnygaard.dk](https://discourse.shapr3d.com/u/jnygaard.dk)
#### Post date: [January 13, 2022, 6:46am UTC](https://discourse.shapr3d.com/t/cut-corner-on-cube/16844/3 "2022-01-13T06:46:23Z")
HI Lars,
Very close. Needed the top to be cut in half, to become a triangle. And the button of the cut to hit the corner.
I managed to do it with a 3 point construction plane and an extrude from that, but it was a bit cumbersome, as I was limited on space. I was modifying a post inside a hole/deep pocket, so tricky make an extrude shape, that wouldn’t cut in the wrong place too. I was hoping it would have been possible to add (lines?) to create an internal surface and then be able to simply delete the tip.
But thanks. It got the job done.
Jesper.
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### Author:  [@LarsG](https://discourse.shapr3d.com/u/LarsG)
#### Post date: [January 13, 2022, 4:55pm UTC](https://discourse.shapr3d.com/t/cut-corner-on-cube/16844/4 "2022-01-13T16:55:32Z")
An image/screenshot would be helpful. Difficult to give help without some visual support. 😉
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### Author:  [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)
#### Post date: [January 13, 2022, 5:06pm UTC](https://discourse.shapr3d.com/t/cut-corner-on-cube/16844/5 "2022-01-13T17:06:25Z")
Is this what you’re trying to do? If not, suggest you do what @LarsG recommended.
[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/8/809f65efe2cb9b95709f0eafcdee2e062b16b0aa.mov](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/8/809f65efe2cb9b95709f0eafcdee2e062b16b0aa.mov)
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### Author:  [@jnygaard.dk](https://discourse.shapr3d.com/u/jnygaard.dk)
#### Post date: [January 13, 2022, 5:23pm UTC](https://discourse.shapr3d.com/t/cut-corner-on-cube/16844/6 "2022-01-13T17:23:54Z")
YES, exactly!
So there’s a Split Body tool, ha. Have not seen that before. Works wonders in this case.
Thanks Mike.
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### Author:  [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)
#### Post date: [January 13, 2022, 5:29pm UTC](https://discourse.shapr3d.com/t/cut-corner-on-cube/16844/7 "2022-01-13T17:29:26Z")
Yes, **Split Body** has become my 2nd favorite tool. My favorite is **Replace Face** 🙂