However , for inexpensive items money is saved by only performing the first two operations .
Note that roughing is usually done on a solid grinding wheel and for an extra fine polish the greasing operation may be broken up into two operations : rough greasing and fine greasing .
For inexpensive items money is saved by only performing the first two operations .
Note that roughing is usually done on a solid grinding wheel and for an extra fine polish the greasing operation may be broken up into two operations : rough greasing and fine greasing .