Question

in terms of post - processing, what is one limitation of powder bed fusion (pbf) that must be done?
adding an adhesive layer to the surface
storing the prints in cool temperatures
grinding off the support structure
curing the prints slowly

Explanation:

Powder Bed Fusion (PBF) is a 3D printing technology. In PBF, after the printing process, the printed object is surrounded by un - fused powder which acts as a natural support structure. However, once the part is removed from the powder bed, the excess powder (which can be considered as a form of support structure in a sense) needs to be removed. Grinding off the support structure (in the context of PBF, removing the excess powder which may be attached to the part in a more solidified form in some cases) is a post - processing step. Adding an adhesive layer is not a typical post - processing limitation for PBF. Storing in cool temperatures is more of a general storage consideration rather than a specific post - processing limitation. Curing is more relevant for technologies like Stereolithography (SLA) which use photo - curable resins.

Answer:

grinding off the support structure