Originally Posted by schanxj
Or if your sack is really heavy, a 4.5" grinder, remove the guard, and use a 6" cut-off wheel. The 6" will cut faster and use less wheels, look for the .035" rather than the .045 thick wheels.
the nice thing about metabo grinders is the 6" grinder is the same size as the 4.5's. just a bigger guard and soft start. they are expensive but they last a long time. i would never go back to a 4.5 grinder after using the 6.