. ▁It ▁is ▁forced ▁against ▁the ▁gr inding ▁wheel , ▁while ▁spin ning ▁at ▁the ▁same ▁surface ▁speed ▁as ▁the ▁gr inding ▁wheel . ▁Do ing ▁so ▁breaks ▁the ▁bond ▁between ▁the ▁ab ras ive ▁particles ▁on ▁the ▁surface ▁of ▁the ▁wheel , ▁expos ing ▁a ▁new ▁surface ▁as ▁particles ▁fall ▁away . ▁One ▁dis adv antage ▁is ▁that ▁the ▁wheel ▁profile ▁cannot ▁be ▁adjust ed ▁except ▁by ▁replacing ▁the ▁roll ▁with ▁one ▁having ▁a ▁different ▁profile . ▁Diam ond ▁cr ush ▁roll s ▁— ▁a ▁diam ond ▁cr ush ▁roll ▁is ▁a ▁cr ush ▁roll ▁co ated ▁with ▁diam ond ▁particles . ▁It ▁we ars ▁more ▁slowly ▁and ▁less ▁wear ▁mean ▁they ▁can ▁be ▁used ▁to ▁achieve ▁t ighter ▁toler ances ▁than ▁plain ▁cr ush ▁roll s . ▁Rot ary ▁dress ers ▁— ▁a ▁rot ary ▁dress er ▁( s ometimes ▁referred ▁to ▁as ▁a ▁p izza - c utter ▁dress er ) ▁is ▁a ▁disc ▁with ▁a ▁hard ▁material ▁- ▁usually ▁diam ond ▁- ▁attached ▁to ▁the ▁edge . ▁The ▁gr inding ▁wheel ' s ▁profile ▁is ▁controlled ▁by ▁the ▁C NC ▁program ▁used ▁to ▁dress ▁the ▁wheel , ▁rather ▁than ▁by ▁the ▁profile ▁of ▁the ▁dress er ▁itself . ▁ ▁References ▁ ▁Category : Gr inding ▁and ▁la pping ▁Category : Met al working ▁tools ▁Category : W ood working ▁tools <0x0A> </s> ▁__ NOT OC __ ▁The ▁Po on ch ▁revol t , ▁also ▁translated ▁as ▁the ▁Po on ch ▁u pr ising , ▁was ▁a ▁Civil ▁revol t