Review on DEWALT DW840 7 Inch Medium Grinder by Micheal Esquivel

This is a beast. Even with cheap blades/cups it will go through things like oil. Bought to cut through a steel channel (the previous owners of my house built a two story tower from a 1/4 inch angle and channel in the back of the backyard to run a clothesline from a second story window). As I lowered the tower very carefully, I had to get rid of the steel. My little 4.5 inch grinder didn't cut it. This mill completed the project quickly. I also bought a concrete grinding diamond cup to knock out some of the burrs. Again no problem