I'd say the "source code" for your designs is hand-crafted, but the material coming off the CNC machine is not. It may not be mass manufacturing, but if additional copies are essentially a button-push away, I'd say that it wasn't hand crafted. Now if the setup time on the CNC machine took longer than making it on a manual mill/lathe, then we might have some grey area. BTW, what are you using for your "desktop CNC" machine? Do you have any recommendations? And what materials are you machining? Steel? Brass? Aluminum? Plastics?