Question

metal
use the information below to answer the question.
there are many different techniques that can be used to create forms out of metal using a 3d printer. most processes share common similarities, while each have characteristics that are specific to the process.
binder jetting
this process also starts by spreading a layer of powder across the build table. the printer will then deposit droplets of binder agent onto the surface to fuse the powder together. there are several different ways the binder jetting process can be used to create metal parts.

1. one method is to create a sand casting mold. this can be done by first printing the mold out of sand. the next step is to pour the molten metal into the mold and then let it cool. as soon as the material has hardened, you finish by breaking off the mold.
2. another common method is to print parts using metal powder. these parts are printed using a similar technique, but will come out in a green state. to harden the parts, you will need to place the forms into a furnace and allow the heat to melt the metal together.

when parts are in a green state they are often very fragile and weak.
metal parts created in this way will often have a porous composition as the binding agent that holds the powder together has burned away in the furnace. there is a secondary process that can be used to enhance the mechanical properties. this process involves the part wicking up bronze into the part, filling in all the pores.
when a material is porous, this means there are spaces or gaps where liquids and air may be able to get through.
which of these is not part of the binder jetting process?
pouring metal into a sand mold
placing your piece in a furnace
curing resin using uv light

Explanation:

The text describes the Binder Jetting process for creating metal parts. It mentions spreading powder, depositing binder, creating sand - casting molds (involving pouring metal into a sand mold), and using a furnace for hardening metal parts. However, curing resin using UV light is not related to the Binder Jetting process for metal as described. Resin and UV curing are more associated with processes like Stereolithography (SLA) which is a different 3D - printing process (usually for plastics or resins, not metals in the context of Binder Jetting).

Answer:

curing resin using UV light