Rotating Hand Tool - Valve Grinder?

by Tom Weems
(Euless TX)

Rotating Hand Tool - Valve Grinder?

Rotating Hand Tool - Valve Grinder?

This tool resembles a drill but the interchangable "bit" is flat and rather thin. The tool has a wooden knob on top and a hand crank on the side. When the crank is turned the "bit" turns approximately 250 degrees in one direction then reverses direction for approximately 110 degrees resulting in a progression in one direction. The "bit" is too thin to be a boring tool. I do not know its function.

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Jan 10, 2010
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starstarstarstarstar 		Rotating Hand Lapping Tool
by: Toms' Boy

This tool is in my garage now. It is a valve lapping tool for seating valves on engines. At one time, the valves had a slot in them just for this purpose. It also had an interchangeable suction cup for the valves without the slot.
Dec 02, 2009
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starstarstarstarstar 		Have one!
by: Steve

Among the many old tools in my Dad's shop, he has one. It is in fact a valve grinder and we used it when I was a kid. You place grinding compound in the seat and grind away. Perfect every time.
Oct 31, 2009
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starstarstarstarstar 		Valve Grinder
by: GerryB

You guessed right, it is a valve grinder.
I can't tell you what engine it is for , but do remember seeing valves with a small slot in the top a long time ago, maybe 60 years.

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