Question

powder bed fusion technologies (pbf)
use the information below to answer the question.
powder bed fusion (pbf) only uses metal. there is no sand, plastic, or polymer. powder bed fusion (pbf) is not a desktop technology, as it is a big machine that uses a lot of heat. while selective laser sintering (sls) uses a bed of polymer powder, pbf uses a metal powder. pbf uses support material to help keep the print from warping. unlike binder jetting, the print is finished when its taken out of the powder box and does not need to be placed in a furnace.
there are two different fusion bed technologies: direct metal laser sintering and selective laser melting.
direct metal laser sintering

• fuses the particles together
• doesnt fully melt
• uses alloy metals

selective laser melting

• melts the part together
• it requires a homogeneous part
• uses common metals such as titanium

what do powder bed fusion (pbf) prints use to prevent warping?
low heat
a support material
a uv light source
a bronze additive

Explanation:

The text states that PBF uses support material to prevent the print from warping.

Answer:

a support material