Question

fff: types of support
use the information below to answer the question
there are two types of support structures with fused filament fabrication (fff):
dissolvable and standard.
dissolvable
dissolvable support is available if the user has a dual spool fff machine, or when they
upload the file. dissolvable filament is used with the main filament to create the fff
design without any detrimental effect on the surface design.
pva is a water - soluble support material that goes well with pla. abs and hips require
a chemical and alcohol to dissolve, so it is better to avoid this unless there is a specific
strength issue needed.
standard
with the standard structure, the support material is made out of the same build
material. there are two options available: tree structure or accordion.
tree structure has minimal impact on the surface. it is also good for minimizing post -
processing.
accordion structure is the default. it can be influenced through the slicer to get it
down to the minimum support needed. this helps to reduce the impact. if the surface
condition is not a concern, the program - generated accordion support structure can be
used.
which of the following is true about dissolvable support
structures for fused filament fabrication (fff)?
they are made of the same material as the build material.
they require additional post process polishing and protection.
they must always be dissolved in a chemical solution.
they can be used without any detrimental effect on the surface design.

Explanation:

The text states that dissolvable support uses a filament that creates FFF designs without detrimental surface effects. Other options are incorrect: standard (not dissolvable) uses the same material as the build; no mention of additional post-processing for dissolvable; PVA (dissolvable) uses water, not always chemicals.

Answer:

They can be used without any detrimental effect on the surface design.