The point is: A lot of folks own a 3d printer and they are local. I can produce ~50 shields per day, that means I can supply shields to around 5 to 10 doctor's offices per day. My suburb in the city seems to have a few dozen doctors. Also if they can have a shield tomorrow, that is better than a shield in 2 weeks.

This can be a supplement until the original supply chains are up to speed and the doctor's can get the real equipment through official channels.