Next question:
Do you not care how much you make, monetarily, while making these zippers? Or, is this just something you want to try?
I am guilty of trying all kinds of way out manufacturing ideas. Zippers require exceptional accuracy. Probably why they are made on rather sophisticated machinery.
I too have most of the hand tools, using them for repairs, not manufacture.
BTW: You can buy certain parts easily. I have never even thought of buying "teeth" separately. If I need teeth for a repair, I take them from a piece of zipper I have cut from another.
Ferg