So yesterday I was in the hardware store and found a Steel Grip Bench grinder. It has two wheels on it, and it's 1.1amp and 1/4HP. I have been hearing for a while about angle grinders, and how useful they are. However this was on clearance for $30 and I figured I should snatch it up if it comes in handy. I originally thought that a bench grinder was a stationary version of an angle grinder, but it seems to take totally different wheels. In fact, when I googled information on the difference between bench and angle grinders, I was unable to find anything that really compared the two. I have no idea what the two wheels that it comes with are actually good for, although they are something like 30 grit and 62 grit I think. I tried grinding my steel washers by clamping them in a vice wrench and had some success, but the "softer" aluminum I tried working on was significantly harder to work with because it kept causing the wheels to slow down when I pressed too hard. Probably also a product of the fact that it's so cheap and a low HP, but I have no idea how these things are really supposed to function. I guess the main thing I am asking is, can you use bench grinders for the same thing as angle grinders? Are there special wheels that are designed to cut certain materials on it? I cannot find much of anything for information on that. The default wheels don't have any information other than their grit.