I am using a very inexpensive Shapeoko 3 to produce precision milled PTFE jaws for Stickvise from my basement!
Why don't I have the part molded or machined somewhere else? I project sales of about 200 pairs per year. Molding PTFE is a specialized process because of the very high temperatures, so it would only be warranted at higher volumes or if I could justify a much higher price point. Machining is more typical in this volume range, but outsourcing machining was still too expensive.
To hit the price point I wanted and not commit to large manufacturing runs, I chose to get a machine to make the parts myself. This also meant I could justify having my own CNC at home, which I had wanted for a while.
I'm happy to say the machine is working well and has already paid for itself. Most importantly, I have a new toy that I never would have bought otherwise.