emery stone

In 1873 Jeppson managed to produce an artificial emery stone.

To prepare the burnisher, it must be rubbed sideways across an emery stone.

These be held against the whirling emery stone until they were as sharp as daggers It was.

Some repairers use sandpaper or emery paper in place of the emery stone.

So he found a sewing kit and a piece of emery stone, and started making little screwdrivers out of needles.

When his son David graduated from Babson College in 1976, manufacturing in America was in an early phase of its long decline, and Worcester was still a center for the production of sandpaper, emery stones and other abrasives.