How are syringes manufactured?!
Question: How are syringes manufactured?
How can one make TUBES so small that they can almost painlessly pierce the skin?! Would even very precise machinery be able to do that?
Answers:
"Would even very precise machinery be able to do that?"
No, they don't use machines - as you point out it can't e done. Each is made by hand-rolling a steel tube against a wooden tale