Technical review of LSPc® | Next Gen mSLA

Introduction
The almost four-decade-old story behind Charles “Chuck” Hull’s industry-changing invention has become the story of a 3D printing legend. As an engineer frustrated by the long lead times for plastic prototype parts, Hull saw his work with UV light to cure resin-based tabletop coatings as a way to solve the problem, and after months of late-night tinkering, he succeeded. In 1986, Hull applied for a patent for his “Device for the production of three-dimensional objects by stereolithography”. His application described a machine that “prints” thin layers of UV-curing material on top of each other using a programmed, moving laser beam that shines on the surface of the liquid. Shortly afterwards, he founded 3D Systems, and today it is undisputed that the commercialization of his stereolithography device (SLA) has changed the development of manufacturing. We take a closer look at the evolution of the stereolithography process that eventually led to the invention of masked stereolithography and Lubricant Sublayer Photo-curing technology, a 3D printing process that is orders of magnitude faster than the original stereolithography process.

This guide addresses:

  • Throughput restrictions with the conventional SLA
  • Lubricant Sublayer Photo-curing (LSPc) – technical overview
  • How to achieve an up to 20-fold increase in productivity

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