Fig. 1
From: Low cost additive manufacturing of microneedle masters
The stereolithography process. a) A CAD file of the desired part is created and b) computationally sliced into layers. c) Each layer is converted to an image that is d) projected into the resin bath as the layer is being fabricated. The image is generated by reflecting a light off of an array of micromirrors called a DLP chip and into the resin. Light induced polymerization produces the part