Question

sls: powder removal
use the information below to answer the question.
in selective laser sintering (sls) 3d printing, support structures are unnecessary, but
hollow prints often retain unsintered powder inside. to address this unsintered
powder, designers incorporate strategically placed escape holes, allowing easy
removal of excess powder. this not only streamlines the cleaning process but also
reduces the print’s weight, leading to cost savings.
print strength
designers have flexibility in choosing the location of escape holes. they can integrate
them seamlessly into the design or hide them strategically. opting not to use escape
holes may compromise the strength of the sls print due to added weight. increasing
the wall thickness of an sls print, coupled with the incorporation of escape holes,
ensures it will have optimal strength.
what type of sls print will often retain unsintered powder
inside?
a small print
a complex print
a hollow print
a dense print

Explanation:

The text states: "In Selective Laser Sintering (SLS) 3D printing, support structures are unnecessary, but hollow prints often retain unsintered powder inside." By matching this statement with the question, we can identify the correct option.

Answer:

C. a hollow print