Question

sls: comparison with injection molding
use the information below to answer the question.
injection molding is a process whereby nylon beads are melted and injected into a
mold. this process is used to make large production runs of an item when a thousand
or more are needed. creating the mold takes time and money. if a few hundred items
are needed, sls might be an option, depending on the strength and nature of the
item. sls wont have the same mechanical properties as injection molding, however.
sls advantages

• sls is faster than injection molding.
• the start - up cost is less than injection molding.
• it can do more complex geometry than a traditional injection mold process.
• having a natural fillet or radius is stress - relieving for the print.
• a prototype can be created before going to injection molding.

before using injection molding, what can sls be used to
create for the process?

• a bridge
• a support structure
• a prototype
• a large production run

Explanation:

From the SLS advantages list, it's stated that "A prototype can be created before going to injection molding." The other options: a bridge is not related, a support structure isn't mentioned as SLS's pre - injection molding creation, and a large production run is for injection molding (not SLS before it). So the correct option is the one about a prototype.

Answer:

C. a prototype (assuming the options are labeled A - D with C being "a prototype", if the labels are different, adjust the identifier but keep the text. Here based on the options given, the correct one is "a prototype" among the choices, so the answer is the option with "a prototype".)