Josh Gambrell covers UV packing to the extreme with Blender and an add-on.
Packing UVs is a bit of an art form, and more recently, there are some excellent tools out there that can help in that regard. Packing proper UVs optimizes texture resolution. This new video by Josh Gambrell shows how you can use a free add-on to help make some incredibly tight UV packing.
This video shows how quick the whole process is using UV Squares. This free Blender add-on reshapes UV selections into a grid, making them much easier to pack.
About Josh Gambrell.
Josh is a 3D hard-surface artist, educator, and YouTuber who has been using the Blender 3D software for nearly a decade.