Knife project normal (surface normal cut with curve) — Right-Click Select
3 Ways to CUT HOLES in Objects in Blender - YouTube
How to cut out a shape in your object in Blender? - Artisticrender.com
modeling - Boole Cut Surface Material - Blender Stack Exchange
Shatter Cut (blender addon)
modeling - How can I recreate this diamond cut texture surface like on certain flashlights? - Blender Stack Exchange
Knife Tool — Blender Manual
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 | Facebook
3 Different Ways To Cut Any Object | Cut & Fill Surface | Simple Methods For Blender (All Versions) - YouTube
How to cut out a shape in your object in Blender? - Artisticrender.com
How to cut out a shape in your object in Blender? - Artisticrender.com
Blender Bisect Tool Split Mesh Into Two Parts Blender 2.8 - YouTube
Cut hole in slightly curved / beveled surface - Modeling - Blender Artists Community
Cut Surface After Boolean? - Modeling - Blender Artists Community
Bisect — Blender Manual
Blender Bisect Tool Split Mesh Into Two Parts - YouTube
Secret way to cut a grid - BlenderNation
modeling - How would you cut a shape out of an object using another object? - Blender Stack Exchange