a : something which is shaped by casting in the mildew or kind: including (1) : a reproduction (as of a statue) in metallic or plaster : casting (two) : a fossil replica of the small print of a organic object by mineral infiltration b : an impression taken from an object with a liquid or plastic compound : mould They manufactured a mask from a wax cast of her confront.
from the melancholy scrap and junk suggest this site throwing away or breaking apart as worthless in existent kind.
discard implies the allowing go or throwing absent of something that is becoming worthless or superfluous although typically not intrinsically valueless.