FIGURE 2.

(A) Grids printed in bath and (B) on a dry surface, pressure 2.3 bar, offset 0.45 mm, and speed 30 mm/s. Pictures have been taken at a magnification of × 1. While printing, the hydrogel was combined with a blue edible dye in order to make the printed geometry visible. (C) Top view of the spirals for each hydrogel. G8A7: pressure 1.8 bar, speed 20 mm/s, offset 0.35 mm–20 layers. G4A4: temperature 10°C, speed 20 mm/s, pressure 1 bar–15 layers. G4A2: head temperature 10°C, plate temperature 5°C, speed 20 mm/s, pressure 0.8 bar–15 layers. Summary table: z and diameters measurements, and statistical evaluation of the printed structures. (D) Diameter measurements for the samples: G8A7 – 20 layers, G4A4 – 15 layers, and G4A2 – 15 layers. (E) z measurements for the samples: G8A7 – 20 layers, G4A4 – 15 layers, and G4A2 – 15 layers.