Question

mj: drop on demand
use the information below to answer the question presented.
drop - on - demand material jetting is useful because of its ability to print not only continuous lines of resin, but also precise droplets of resin. this ability makes it useful for jewelry and machine parts that require very high detail.
like regular material jetting, drop on demand uses two build materials: a dissolvable support material and a build material. however, the build material used is a wax - like material rather than a photopolymer resin. after the material is deposited, a milling blade flattens the top surface of the build, removing any bumps or imperfections. the process continues until the piece is finished.
can you explain the process of creating a mold using the lost - wax casting technique?
the mold is printed with a wax like polymer.
a heat resistant material is placed around the printed object to create a mold.
the drop on demand printer prints a mold out of a refractory material

Explanation:

The lost - wax casting technique involves first creating a wax model of the object. Then, a heat - resistant material is placed around the wax model to form a mold. The wax is then melted and drained out (the "lost" part), leaving a cavity in the mold. Molten metal or other material is then poured into the cavity to create the final object. Among the options, "A heat - resistant material is placed around the printed object to create a mold" best describes a key step in the lost - wax casting process.

Answer:

A heat - resistant material is placed around the printed object to create a mold.