I love this grinder. I use it to shape very small pieces of silver for my jewelry. It saves my fingers from a lot of invasive writing. The grinder is ideal for this purpose. I don't know how to get 7 speeds from a switch where 2 settings are off and the rest are forward and reverse. But honestly, I just need it to go and it happens. Takes up a small footprint on my bench and isn't loud enough to startle the cat. A sleeping kitten is a good decibel barometer. Only deducted one star because the manual is in Chinese and the shifter must be hidden somewhere and I can't find it.