I will allow that some buyers may have received defective unit, which resulted in a negative review. However, with the exception of a few minor details, the unit I received was just fine.Right off the bat, except for a few small differences, this grinder seems to be the same one Grizzly sells for $160.00, plus $19.00 shipping. The differences are that the Grizzly has different wheel grits and does not come with either a dressing tool or an extra tool rest. Plus, the Grizzly owners manual is much better than the Wen. I don't mean to put Grizzly down here because their customer support is outstanding. But if money is tight, you CAN save $69.00 on Wen vrs the Grizzly, which would allow you to buy a couple of extra wheels and a diamond grit dressing tool if you want,Some buyers have complained that the light won't work unless the main power switch is turned on. Wen apparently has taken note of this because on the unit I received you can turn the light on whether or not the main power switch is turned on.Both wheels wobble side to side a very small amount. But this doesn't cause any noticeable vibration. I will eventually bolt the unit to a home made stand. Surprisingly however, the grinder I got runs so smoothly and is heavy enough that I can use it for the time being sitting directly on its rubber feet on my work bench.I had a definite reason for buying this grinder. I am just beginning to take up turning and got a great deal on a used Delta 1460 wood lathe. However I have found that a set of the best lathe chisels are going to run north of $350.00. I decided instead to buy this grinder and a set of HSS chisels from Harbor Freight for $64.00. The chisels are really quite nice except they are useless unless you sharpen them first. So now I have lathe chisels that work just fine, plus a dandy grinder - all for maybe half what a deluxe set of chisels would have cost.