Cutting out complex shapes can be time-consuming, and on a curved surface it can be almost impossible to get right. Luckily, there's a tool called knife... | By Blender Secrets | In
Problem using the Knife Project tool - Modeling - Blender Artists Community
Blender Knife Project updated since 2.93.4 - YouTube
Can't use "Knife Project" - Blender Stack Exchange
How To Use The Knife Project Tool in Blender - Skillademia
Will the knife project tool be implemented in 2.8? - User Feedback - Developer Forum
Draw cuts (Knife tool) — Right-Click Select
Will the knife project tool be implemented in 2.8? - User Feedback - Developer Forum