You are viewing a single comment's thread from:RE: Daily Photography Game Question “What Do You See?”View the full contextbitfiend (60)in #contest • 7 years ago This looks like a saw blade! I've never noticed that hook carving in'em though.
That hook shaped carving is an expansion slot @bitfiend
They laser cut them in several places around the blade to prevent the blade from warping when it heats up. They are curved to relieve stresses at the end of the expansion slot.
Thanks for explaining this! I assumed they were there for some kind of flexibility.