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1. (WO2018005452) POSITION DETECTION TECHNIQUES FOR ADDITIVE FABRICATION AND RELATED SYSTEMS AND METHODS

Pub. No.:    WO/2018/005452    International Application No.:    PCT/US2017/039443
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Wed Jun 28 01:59:59 CEST 2017
IPC: B29C 64/00
B29C 67/00
B29C 64/232
B29C 64/227
B29C 64/245
B29C 64/20
Applicants: FORMLABS, INC.
Inventors: NOLET, Alexander
FRANTZDALE, Ben
MEGRETSKI, Dmitri
Title: POSITION DETECTION TECHNIQUES FOR ADDITIVE FABRICATION AND RELATED SYSTEMS AND METHODS
Abstract:
According to some aspects, techniques for determining a position of a build platform in an additive fabrication device are provided. According to some embodiments, forces resisting separation of the build platform from an opposing surface are measured and a position of the build platform with respect to the opposing surface is determined. In some embodiments, such forces may include fluid forces present during separation of a build platform from an interior surface of a liquid photopolymer container.