Question

pbf: dimensional accuracy
use the information below to answer the question.
the tolerances of direct metal laser sintering are very good. they are the same as material jetting with a size of 0.1 millimeters - just below that of a human hair.
once the print is complete, the supports need to be cut off the print bed by the operator. once the user has the piece, they can do any processes to it that they would with any other metal material.
materials

• stainless steel is corrosion - resistant and the most cost - effective.
• bronze is functional but quite expensive.
• aluminum is a good material but expensive.
• titanium is another good material but expensive.

other available materials include:

• cobalt - chrome
• inconel metal
• nickel - chrome (alloy)

in terms of powder bed fusion (pbf), which of the following is true about bronze?
it eliminates the need for support structures.
it is corrosion - resistant.
it is the most cost - effective material.
it is functional but quite expensive.

Explanation:

The text clearly states "Bronze is functional but quite expensive." This directly matches one of the options. The other options are incorrect as there is no mention in the text about bronze eliminating support structures (only mentions support structures need to be cut off for the process in general), stainless steel is stated as the most cost - effective (not bronze), and there is no information in the text about bronze being corrosion - resistant.

Answer:

It is functional but quite expensive.