Graphics Reference
In-Depth Information
Finally, the LS printing process is hot. A completed printed object can't be
grabbed quickly out of the machine. Depending on the size and thickness of
the layers, larger parts might need to cool for up to a day.
Three Dimensional Printing (3DP)
3DP, in yet another confusing naming convention, use a process called “three
dimensional printing” where the print head squeezes adhesive—or some kind
of glue—onto raw powdered material. 3DP was invented in the late 1980s by
an MIT student named Paul Williams and his advisor Professor Eli Sachs.
At that time, commercial additive manufacturing systems used lasers and
sometimes toxic printing materials and were the size of a small truck. Early
additive manufacturing machines were complicated to operate and expensive.
Since 3DP was a welcome alternative, MIT would later patent the technology
underlying 3DP and license it to several companies (where it became the
foundation of many of the world's commercial 3D printers).
The color 3DP process inkjets colored glue onto a starch-based powder bed, then
spreads a new layer of powder and repeats.
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