Let's say that I start making hand made spoons in clay, and they become so popular that I no longer can keep up with the demand. I hire 10 other clay makers (I dunno if this is a term, but I guess you get it) and they learn to make these spoons like I do.
That allows me to focus on increasing my catalogue of hand made clay objects and now I have 10 different items I can sell and the demand explodes, so now I have 50 people sitting making hand made clay forms, and then a machine is mass producing spoons and other items, but each item have 50 unique variants, initially designed by me, and then later 50 employees created a form for a machine to produce.
Is it hand made or machine made? Technically it's machine made, but you'll most likely not meet another with an identical one.
My apologies for this comment, I am extremely bored and in physical pain, so this happened... And it probably doesn't make any sense to anyone but me.