Whenever you go into a machine shop, look at the emery wheel.
Basils for gaiters are dyed in paddle and fluffed over the emery wheel.
In Fig. 677 let a represent a reamer and b a segment of an emery wheel.
The emery wheel should be of a grade of not less than 60 or more than 70.
If it is at all tight, grind it on the rim by means of an emery wheel or a grindstone.
The fifth machine was a big grindstone and the sixth was an emery wheel.
This puzzled him and he inquired how it happened that the emery wheel made only 3600 rather than 3840 revolutions per minute.
Grind something on the emery wheel and you will find that the belts will slip more.
The water-wheel makes fifteen revolutions per minute and the emery wheel goes 256 times as fast as that.
One pound of resistance at the emery wheel is like 256 pounds of resistance at the water-wheel.