If it is at all tight, grind it on the rim by means of an emery wheel or a grindstone.
In Fig. 677 let a represent a reamer and b a segment of an emery wheel.
The fifth machine was a big grindstone and the sixth was an emery wheel.
The emery wheel should be of a grade of not less than 60 or more than 70.
The line of cross-feed motion of the emery wheel may be set to the required angle as follows.
This puzzled him and he inquired how it happened that the emery wheel made only 3600 rather than 3840 revolutions per minute.
In grinding the bevel, the chisel must be held so that the cutting edge will be parallel to the axis of the emery wheel.
It consists of an emery wheel mounted upon a spindle and with a slide rest in front of it.
An excellent material for removing the glaze from an emery wheel is a piece of ordinary pumice stone.
It is frequently the case that an emery wheel will become glazed, due to its extreme hardness.