I've got 3 different valve spring compressors,one big "banjo"type,one overhead type,and one flathead style.I went to a flea mkt with my wife,and there was a guy with a table full of "stuff",looking around,I found 2 old valve grinders.They are like old egg beaters,where you turn a handle,and the tool laps the valves.Even has valve seat cutters,to cut the valve seats.I got 2 machines for $5.00. lha