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Knife tool does not work

Contributor ,
Jan 07, 2018

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For some reason the knife tool will not work when I create a shape, no matter how I create it, I can create an ellipse or a rectangle and it still won't cut.

Has anyone else had this issue?

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Knife tool does not work

Contributor ,
Jan 07, 2018

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For some reason the knife tool will not work when I create a shape, no matter how I create it, I can create an ellipse or a rectangle and it still won't cut.

Has anyone else had this issue?

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Jan 07, 2018 0
Enthusiast ,
Jan 07, 2018

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Is the object selected?

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Jan 07, 2018 2
Advocate ,
Jan 07, 2018

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it works fine.

Be carefull and select object you want to cut, start end finish using knife outside the selected object

pawel

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Jan 07, 2018 1
Engaged ,
Jan 07, 2018

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The knife tool won't cut open, unfilled shapes. Only open FILLED shapes or closed shapes (filled or unfilled).

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Jan 07, 2018 2
Adobe Community Professional ,
Jan 07, 2018

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Also:

  • If no objects are selected, the knife tool will cut across all shapes
  • If any objects are selected, it appears that the knife tool is cutting, but it will only cut the selected objects

If it isn't working, the first step is to confirm that nothing is selected or select the object you wish to cut.

What do you see when you try to cut and it fails?

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Jan 07, 2018 1
Community Beginner ,
Feb 24, 2020

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This is my first post to the community so - Hi!

 

I'm using illustrator 2020

 

I'm having the same issue with my knife tool not cutting. I have a shape that was created from a font. I converted the font into outlines, and then changed it into a compound path. I filled this shape with gray. With that new shape selected I grab my knife tool. Holding down alt/option to drag a straight line, and starting off the image, I drag a line but no slicing is happening. I did it with my mouse and with my wacom tablet - same result - no slicing.

 

Anyone have any ideas? 

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Feb 24, 2020 0
Community Beginner ,
Feb 24, 2020

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Update:

I created a new shape, a basic ellipse, and the knife worked just the way it's supposed to. The only thing I can imagine is the original shape I was trying to cut up had an issue. 

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Feb 24, 2020 0
New Here ,
Apr 21, 2020

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For anyone that finds this in a Google search - I solved the problem. 

 

I was selecting the knife tool, pressing alt for a straight line, making my two cut marks to take out a segement (in my case of a circle), but when I tried to drag the one piece away - I could only move the whole shape, even though I could see the cut marks. 

 

By trial and error I found the solution - select the object, then select the knife tool. Make your cut marks. Then press select again (V). Then double click on the section you want to separate (so it opens the isolated mode with everything else greyed out). Then drag your section away from the whole image and they'll separate. You can then press escape to go back to normal view and you have two objects. 

 

Hope this helps 🙂 

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Apr 21, 2020 2
Adobe Community Professional ,
Apr 21, 2020

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"By trial and error I found the solution - select the object, then select the knife tool. Make your cut marks. Then press select again (V). Then double click on the section you want to separate (so it opens the isolated mode with everything else greyed out). Then drag your section away from the whole image and they'll separate. You can then press escape to go back to normal view and you have two objects. "

 

If you need to enter isolation mode then you need to check the object in the layers panel. Is it really just a simple path?

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Apr 21, 2020 0
New Here ,
Apr 21, 2020

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Thanks Monika. No, not in my case. Which is why I posted this solution. To help anyone who can't get their shape to cut out following the usual route. 🙂 

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Apr 21, 2020 0
New Here ,
Sep 25, 2020

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THANK YOU!!!  谢谢!

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Sep 25, 2020 0
New Here ,
Jun 03, 2020

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This appears to happen when the object is contained within a clipping mask. I've seen it happen when I have sub-layers and the main containing layer has a clipping mask, which clips everything in the sub-layers too. So try this: create a new layer that is not nested in any other layer. Move your object there. Try the knife tool now. If it works, you'll know it's the clipping mask that's intefering somehow.

Isolation mode also works because somehow it negates the clipping mask bug.

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Jun 03, 2020 0
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