From the headline, I was totally thinking of this as like a 3D printer and then thinking "there's no way there's a feedstock for water that's cheaper to make an

From the headline, I was totally thinking of this as like a 3D printer and then thinking "there's no way there's a feedstock for water that's cheaper to make and transport than ... water!". But it turns out it's rather something like 2D printing that claims to aim the water at particular areas better.