WEBVTT

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Material Jetting is another type

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of three-dimensional printing system

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which has a multitude of applications

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within the realm of military medicine.

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This process creates patient
specific anatomical models

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with a drop-on-demand method

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that incorporates materials
of different colors,

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transparencies, and
flexibilities into the build.

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After the operator sends
the object to the printer

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from a standalone computer system

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the print heads begin to apply
the photopolymer material.

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This light activated
resin is jetted, sprayed,

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or extruded horizontally along the

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X and Y axis onto the build surface.

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Meanwhile high intensity
ultraviolet lights cure the layer,

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allowing the polymer to quickly transition

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from liquid to solid.

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In order to integrate special features,

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several different materials

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are mixed together during the build

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to obtain new substances
consisting of all various hues,

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opacities, or even hardness.

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As the printing process continues,

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each new layer bonds to the previous one

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until the object is complete.

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A technician then removes the
model from the build platform

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and the temporary supports
can be detached by hand,

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through the use of a pressure washer,

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or in a bath of basic solution.

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Once all the supports are eliminated,

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any transparent items
are coated with resin,

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or another transparent
material, then polished by hand.

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Next, the models are
allowed to cure or set,

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this ensures the final product achieves

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optimal visualization properties.

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Because Material Jetting can
accommodate multiple materials

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within an individual build,
it's an extremely useful printer

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at the 3D Medical Applications Center.

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Technicians incorporate distinct external

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and internal anatomy such as:

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metal hardware, teeth roots, and tumors.

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These features provide a visual reference,

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which aid medical personnel
in pre-fitting devices

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for both routine and highly
complex surgical procedures.

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