This is a mod I randomly made out of boredom, I was inspired by some YouTube short of someone using a pressure flaker, leather, and obsidian to make a blade
To flake, you need to be holding a pressure flaker, a piece of leather in your off-hand, and right click a suitable block (As of v1.1, obsidian, emerald, wood, carbon, and osmium)
!! JEI IS VERY HIGHLY RECOMMENDED FOR THIS MOD !!