Help, Black Decker Valve Grinder | The
Jan 04, 2012· The drill motor thing and stones etc are for doing the valve seats. The "valve" refacer is a separate machine. If you were in the Phoenix area I could show you how it all works. ... It has the fixture and stone for grinding the valve stem tips, too. that big knob between the stones at top, should be the coolant control I think. FJ ...