Fig. 3
From: Low cost additive manufacturing of microneedle masters
Microneedle masters fabricated using default settings. Microneedle array fabricated using a-c) 50 μm layer thickness, d-f) 25 μm layer thickness, g-h) and 10 μm layer thickness at differing magnifications. Figures c), f), and i) are close-ups of the tips which demonstrate the lack of sharpness which would be required of a needle that could penetrate the skin