He dived head first onto jagged rocks, gashing his head and breaking his neck. An eddy drove the metal prow into Dickinson's abdomen, gashing it deeply. The troopers advanced on the marchers, clubbing and whipping them, fracturing bones and gashing heads. Liston assaulted the officer, breaking his knee and gashing his face. After gashing the gear or sprocket is finished via hobbing, shaping, or shaving. The cutter is then angled to the "gashing angle".