modeling - Using knife project method to make a shape into the mesh - Blender Stack Exchange
New knife project large feedback - User Feedback - Developer Forum
The way Knife Project works was updated recently. It's a bit more efficient, but I recommend selecting the cutter object in the Outliner so you don't... | By Blender Secrets | Facebook
How To Use The Knife Project Tool in Blender 3.0.0 - YouTube