Originally Posted by
TejanoTrackie
Wrong. CNC is an acronym for "Computer Numerically Controlled", which is a type of milling machine that is extremly precise and can automatically replicate a machined item to very high tolerances. It has nothing whatsoever to do with the hardness or finish of the item. CNC'd items can be hard or soft, and the finish can be durable or not.
Originally Posted by
Tomo_Ishi
I don't get it. CNC is the surface finish right? It doesn't tell you how "reliable" a cog is.
I think you guys are saying something similar in that CNC is just the cutting process. It doesn't speak to the metal's strength or durability.