Design Nomenclature / Physical Model Making
Flash
Also called fin, flashing, spew
This entry has not been translated yet and is shown in English.
Material that squeezed into the gap between mould halves and cured there — a thin fin standing proud of the parting line. It reports clamping pressure lost to the pour or the injection, not a design error. Trimming it is quick; the ghost of the seam it leaves behind is what actually costs the afternoon.
