刮(gua)(gua)刀有一個把手(shou)和鋒(feng)利刀片(pian),用來迅速刮(gua)(gua)掉字跡的工(gong)具.鉗工(gong)用來刮(gua)(gua)削金(jin)屬的工(gong)具,一般(ban)為三棱型,硬度較(jiao)高(gao)鉗工(gong)用來刮(gua)(gua)掉毛刺的一種(zhong)工(gong)具.