saaste ja ebasoovitavate materjalide (nt liivkärn ja pinnale kinnitunud vormisegu, toitekanal(id) ja valupea, valukraat, oksiidkest jms) eemaldamine valandilt (vt valand, liivkärn, toitekanal, valupea, valukraat, oksiidkest; vrd valandi järeltöötlus), process of removing contaminants and unwanted material (for an example, sand core, and residual sand on the surface from casting, gate and riser, flash, burr, oxide scale etc) from casting (see: casting, sand core, gate, riser, flash, oxide scale; compare: post-processing for casting)