Buster (rougher)

An impressionA cavity, or series of cavities (multiple), machined into a forging die to produce a desired configuration in the workpiece during forging. employed in a dieThe machined recess in a die that gives the forging its shape. when considerable metal movement is required and which precedes a blocker cavityThe machined recess in a die that gives the forging its shape. and a finisherThe die impression that imparts the final shape to a forged part. cavityThe machined recess in a die that gives the forging its shape.. Also known as breakdown(1) An initial rolling or drawing operation, or a series of such operations, for reducing an ingot or extruded shape to desired size before the finish reduction. (2) A preliminary press-forging operation./pancake, scalebreak, cheese.