<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">stereolithography</topic></authority><related type="other"><topic>rapid prototyping</topic></related><related type="other"><topic>polymerization</topic></related><related type="other"><topic>stereolithographic models</topic></related><related type="broader"><topic>3-D printing</topic></related><variant type="other"><topic>SL</topic></variant><variant type="other"><topic>SLA</topic></variant><variant type="other"><topic>STL</topic></variant> <note xml:lang="en"><![CDATA[ An an early, widely used 3-D printing technology. It is a process that builds 3-D objects by converting liquid materials into solid parts by curing them using a light source, which causes chains of molecules to link, forming polymers. The process is used for creating models, prototypes, patterns, and production parts. A typical method uses a UV laser to create cross-sections of the object within a vat of liquid photopolymer. The process was first developed in 1986. The process is valued to create accurate parts with repeatable dimensions; applications include engineering assemblies, jewelry casting, and dental repairs. ]]></note></mads>