Flash (manufacturing)
Excess material attached to a molded, forged, or cast product / From Wikipedia, the free encyclopedia
Flash, also known as flashing, is excess material attached to a molded, forged, or cast product, which must usually be removed. This is typically caused by leakage of the material between the two surfaces of a mold (beginning along the parting line[1]) or between the base material and the mold in the case of overmolding.