As far as degree of sophistication, comparing a power hammer to a CNC machine is like comparing a manual typewriter to a laptop.
And I think we would both agree that neither one of them produces a
hand-written document. Just like neither a power hammer nor a CNC machine produces a
hand-made knife.
So I am glad that you see my point.
In addition, using a power hammer still requires an abundance of knife making skill from the operator to profile a good blade. The machine is just reducing the manual labor as opposed to swinging a hammer.
On the other hand, the operator of a CNC machine is more using technical skills to program the machine and the machine is profiling the blade.
A substantial difference IMO.
Why do you call someone who comes up with a three dimensional knife design, and then translates that three dimensional design into a series of operations to be performed, and then translates each of those operations into a set of instructions for the CNC machine to perform in order to realize a knife that achieves that three dimensional knife design, merely an "operator."
Although he is using a milling machine rather than waterjetting, I think that Nathan the Machinist's recent WIP thread here is relevant. Did you happen to read that thread? In it, one can see all of the thought he has to put into how he programs the machine to operate so it can produce the knife he wants with the profile that he has designed for it, the custom jigs or fixtures he has to make, the decisions regarding which tool to use at what point, how to orient the blank for each of the various steps, whether to use a coolant or not, etc.
I think Les George's post on that thread said it well: "
No way! I hear that when you have a CNC the machine does all the work for you! Youre supposed to be drinking coffee and screwing knives together... You must be doing it wrong!!!"
I don't think I would merely consider him an "operator." Nor is he merely a computer programmer writing some kind of C+ computer program. It seems like there is a wee more to it than that.
However, I do not consider the result to be a hand-made knife. Any more than I consider a knife made using a power hammer to be a hand-made knife. IMO, both require "
an abundance of knife making skill." Not a knock on either tool, and I have knives made by a lot of different methods, including using power hammers, using waterjets, etc. But I just do not believe that either one is truly hand-made. Of course, YMMV