1)The first one I bought was leaking oil from its gear case, so back I go to the store to exchange it for another one. I'm not too upset yet.

2)The exchanged one is not leaking oil and looks fine, until I try to use the enclosed spanner wrench to lock a grinding wheel to the spindle. It turns out that the spanner wrench does not fit the spindle, so back I go to the store to find the spanner wrench from the grinder I had just returned. The spanner wrench from the first grinder is fine so I exchange it for the defective one from the second grinder. I'm getting a little upset at this point since I effectively have had two defective units in a row.

3)That night I use the grinder to cut through two small metal pipes, with the enclosed metal-cutting 1/4" wheel. Works well, but at some point I want to change wheels and find that I can't, because the wheel and locking nut have tightened themselves so much that the awkward spanning wrench cannot loosen the nut. The wrench bends (with my hand pressure!) and at this point I am so frustrated and afraid of breaking the whole unit by using any other tool to loosen the wheel, that I return to the store a third time, this time to return the unit altogether.

I will not buy another one with this wheel locking arrangement and crappy wrench.

Milwaukee Rocks...OK, it Grinds (Rating: 5.00)
Review : I used my 6148-6 sander grinder with a wire brush to clean rust off a mower deck. The tool had plenty of power. Two features that I particularly liked (besides the power): the three position extra handle. At one point, it was too awkward to get at the deck with the handle to either side, but being able to work with it atop of the grinder, was great. Second, the safety paddle switch was a real plus. Having used another grinder without the switch, I used to worry about dropping the tool and have it continue to operate. The Milwaukee paddle/safety was unobtrusive and effective. Great tool. Don't forget your eye, ear and respiratory protection.