Well playing devils advocate here, do you see a difference in using a cnc on the mouthpiece of a howler and using a jig to cut it? A jig ,by the way, that was machined. Using a jig is a form of "mass production" in the pure sense of the word.
I think using a cnc on part of the call to get repeatability is fine. I don't think that anyone would argue that a custom call is not one that is popped out of a CNC lathe once every hour or two. But if a call maker uses a cnc machine to express his art I don't have a problem with it. CNC is an art in itself, and can be argued that if you program a part from a drawing you have made, then that part is still an extension of the artist.
The CNC machine still can't tune the call, or select the wood or the finish.
I could also take another tack by saying that using any powertools is not making a custom call. Dremels, Lathes, sanders, and drills are all tools to express the callmakers art.
And so far I am amazed at the calls I've seen and purchased.
