The spindle is of tool steel 31⁄2 inches in diameter at the front bearing, tapering uniformly 3⁄4 inch per foot to the back end.
All machinists know of certain brands of tool steel which they prefer.
Take a bar of tool steel and cut it a little longer than the radius of curvature required.
Large diameter oil tempered springs held in tool steel cups, locked with a key, are provided.
These cutter blades are made of tool steel and have a bevel at each end, one at 45 degrees, the other at 60 degrees.
Other consumers in the main satisfied their requirements by imports of tool steel from these four countries.
The kind shown at A is usually made of tool steel and the body is finished to a standard size.
Again, it does not support the tool sideways unless the tool steel is dressed up and closely fits the groove in the holder.
In tool steel there is an almost infinite variety as to quality.
When the carbon percentage is high, the steel is called "high carbon" steel, and it is used in the shop as tool steel.