Jump to content
You must now use your email address to sign in [click for more info] ×

Knife tool not working


Recommended Posts

I am brand new to Designer and don't have a lot of experience with graphics programs.  The first thing I've tried to do is use the knife tool to break apart images.  I've read the documentation and watched two tutorials.  I click and drag and either my line disappears; or the line is there but I can't move the part of the object that should have been cut.  Sometimes when I click the knife tool I get a square box and it says "0 objects".  I do not have a mouse.  I have a laptop with a touchpad and I have a wacom tablet.  I don't know if the problem is that I can't click and drag without a mouse?? And while I don't have much experience with graphics, I do have the Hatch embroidery program and I'm able to use the knife tool in that program no problem.

Link to comment
Share on other sites

Welcome to the forum @Allorache

The knife tool doesn't work with images and I assume these are (raster/pixel) images not vector images. The knife tool works with curves which are vector. If you are trying to break apart pixel images I would suggest using one of the selection tools to copy/paste or cut/paste the image. Maybe show a screenshot of the workspace and the layers panel so that we can better understand what you are trying to manipulate.

iMac 27" 2019 Ventura 13.6, iMac 27" Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Vectorstyler, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 B|  Add a signature like this so system and app info always seen. Tagging is the gift that keeps on giving. Please consider adding tags to your post, not only does it help searching later on but it helps us, to give focused replies and is greatly appreciated by those that do reply, remember Affinity is for life not just Christmas. 

(Please refrain from licking the screen while using this forum)

Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions

Link to comment
Share on other sites

Create a new, empty document that corresponds to the size of the image to be imported. 
Now place the image and convert it into a curve object.
You now can use the knife tool to cut the image to your heart's content.

If the placed image is bigger than the document size you must rasterize the image after scale to the document size first.

Designer_flkL3lwp4I.thumb.gif.6b278cd28ed8a4b27f4c06cb0563f1ec.gif

AMD Ryzen 7 5700X | INTEL Arc A770 LE 16 GB  | 32 GB DDR4 3200MHz | Windows 11 Pro 23H2 (22631.3085)
AMD A10-9600P | dGPU R7 M340 (2 GB)  | 8 GB DDR4 2133 MHz | Windows 10 Home 22H2 (1945.3803) 

Affinity Suite V 2.3.1 & Beta 2.(latest)
Better translations with: https://www.deepl.com/translator  
Need a system wide color picker? Try Microsoft's (New) Power Toys
Need a robust PDF Solution? Have a look at Stirling PDF

There's nothing you get used to faster than working slowly!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

Terms of Use | Privacy Policy | Guidelines | We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.