I'm a beginner to photoshop but have grasped some basics from a ton of youtube videos, plus trial and error over countless hours!

I created a logo from a circle using the subract front tool.

Now when i try and use the command again it will not work for me.

I'm sure its something simple that's preventing it from working. I've tried faffing with paths, shapes and pixels but still have no luck.

On the screenshot, all i'm trying to acheive it cutting the ends of the blue lines into an angle to match the angle of the pink rectangles right hand edge. Once done, i'll remove the pink rectangle.

There is probally another way to do this but subract front shape i.e. the pink rectangle, is all i can think of.

Any help would be greatly appreciated.

Thanks in advance. Will


  • 7
    You should really consider using illustrator here.
    – joojaa
    Jul 30, 2015 at 13:38

1 Answer 1


The simple way to do this is just to make a selection based on the top shape. If it's on a separate layer, just Ctrl+click on the layer icon in the layers panel.

Then select the layer of the shape you want to change and hit Delete to remove everything inside the selection you've just made.

Alternatively, a non-destructive way to do this would be to make the selection based on the top shape as described above, hit Ctrl+Shift+I to invert the selection, then, with the layer you want to modify selected, click the "Add Layer Mask" button at the bottom of the layers panel. This method will work with different types of layers, including smart objects and shapes, and won't actually delete any of the data.

  • Hey, thank you for the quick reply. So i tried this but i just end up deleting the whole of the blue line?
    – Will
    Jul 31, 2015 at 13:11
  • Make sure the marching ants outline shows you've selected the correct shape. I'm not as familiar with the keyboard commands on mac (been a while since I've owned one), try backspace instead of delete.
    – wing-it
    Jul 31, 2015 at 13:22
  • Hey man, just tried that exactly but it doesn't do the trick. Its such a simple task, any other ideas?
    – Will
    Aug 2, 2015 at 9:54
  • That should work, but I don't know enough about how you have your file set up to give any other ideas. One thing you could check is to make sure the layers you're trying to edit are regular, raster layers, not smart objects or something else.
    – wing-it
    Aug 3, 2015 at 12:55
  • See the edit to the answer. Adding a layer mask should be more versatile regardless of what your layers contain.
    – wing-it
    Aug 3, 2015 at 14:31

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