Question

vat: post-processing
use the information below to answer the question.
post - processing can create a very smooth surface and fine detail as fine as 0.3
millimeters. one of the limitations of vat polymerization is the structure that must be
printed to support the form. support structure causes irregularities on the surface of
the part. however, with the proper post - processing techniques, the print can be as
smooth as an injection mold product.
there are three steps to post - processing: support removal, surface finishing, and
aesthetics.
support removal
any structure attached to the model or project will have to be removed. there are
three common ways to remove support material which are sanding, using an exacto
knife, and by hand/pliers.
surface finish
there are several different ways you can improve the surface finish.within the
printing parameters, the size of the support nibs can be reduced which will decrease
the amount of connection the support material has with the printed part. wet or dry
sandpaper can also be used to reduce the amount of effect the structure has on the
form.
aesthetical enhancements
there are several ways to improve the aesthetical appearance of printed parts. mineral
oil helps create a uniform, glossy surface. spray paint, or paint with a primer can also
be used. the form can also be polished with consecutively finer grits of
sandpaper. slight cosmetic imperfections, that wont affect an engineering tolerance
(such as an air bubble) can be filled with epoxy and then finished with primer and
paint.
what are the three common ways to remove support
structures?
heating, using a drill, and chiseling
sanding, using an exacto knife, and by hand/pliers
pressure washing, using a grinder, and lasering
freezing, using scissors, and sun exposure

Explanation:

The text clearly states in the "Support Removal" section that the three common ways to remove support material are sanding, using an Exacto knife, and by hand/pliers.

Answer:

sanding, using an Exacto knife, and by hand/pliers