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Introduction

The nearly four-decades-old story behind Charles “Chuck” Hull’s industry-changing invention has become the stuff of 3D printing legend. An engineer frustrated with the long lead times needed for plastic prototype parts, Hull looked to his work with UV light to harden resin-based tabletop coatings as a way to solve the problem, and after months of late night tinkering, he was successful. In 1986, Hull filed for a patent on his “Apparatus for production of three-dimensional objects by stereolithography.” His application described a machine that successively “prints” thin layers of a UV-curable material, one on top of the other, using a programmed movable beam of laser light shining on the surface of the liquid. He went on to found 3D Systems shortly thereafter, and today, there’s little argument that the company’s commercialization of his stereolithography apparatus (SLA) altered the course of manufacturing. We take a closer look at the evolution of the stereolithography process that ultimately led to the invention of masked stereolithography and the LSPs technology.

This guide focuses on:

  • Throughput limitations of traditional SLA
  • Nexa3D’s Lubricant Sublayer Photo-curing (LSPc) technology
  • Breaking down the 20x productivity gain equation.

Download the full guide.


Ultrafast 3D Printing Guide