▁gr ind ers ▁and ▁Ch op ▁saw s ▁are ▁also ▁common ▁tools ▁used ▁with ▁cutting ▁disc s . ▁▁ ▁Sm aller ▁projects ▁and ▁smaller ▁or ▁more ▁precise ▁cut s ▁may ▁require ▁a ▁die ▁gr inder ▁equ ipped ▁with ▁a ▁cutting ▁wheel , ▁these ▁cutting ▁disc s ▁are ▁extremely ▁thin ▁and ▁often ▁less ▁than ▁ 2 ▁inches ▁in ▁diameter . ▁Because ▁they ▁are ▁so ▁thin , ▁they ▁are ▁commonly ▁made ▁with ▁metal ▁and ▁have ▁a ▁diam ond ▁co ated ▁edge ▁for ▁the ▁ab ras ive . ▁This ▁type ▁of ▁disc ▁cut ter ▁is ▁good ▁for ▁sheet ▁metal ▁and ▁light ▁weight ▁or ▁thin ▁materials , ▁th icker ▁or ▁heav ier ▁materials ▁will ▁need ▁a ▁larger ▁disc ▁cut ter . ▁▁ ▁For ▁long ▁straight ▁cut s ▁on ▁sheet ▁metal ▁or ▁light ▁cut - off ▁work , ▁a ▁standard ▁Circ ular ▁S aw ▁is ▁used ▁with ▁a ▁ 7 ▁ 1 / 4 ▁in che ▁cutting ▁wheel . ▁These ▁cutting ▁disc s ▁are ▁made ▁just ▁like ▁the ▁smaller ▁whe els ▁for ▁an ▁angle ▁gr inder , ▁with ▁res in ▁bond ed ▁ab ras ive ▁material , ▁or ▁metal ▁with ▁a ▁diam ond ▁co ated ▁edge . ▁▁ ▁A ▁cut off ▁saw ▁is ▁used ▁for ▁cutting ▁larger ▁materials , ▁like ▁heavy ▁metal ▁stock , ▁metal ▁stud s , ▁or ▁cutting ▁large ▁metal ▁pipe . ▁The ▁cutting ▁disc s ▁for ▁this ▁tool ▁are ▁usually ▁ 1 0 ▁or ▁ 1 2 ▁inches ▁in ▁diameter , ▁with ▁a ▁composition ▁like ▁that ▁of ▁the ▁smaller ▁whe els ▁mentioned ▁above . ▁When