Precision machining is generally done on either an electric CNC Mill
or CNC Lathe. This is because CNC (computer numerical
control) machines allow for better control of the
cutter and allow for the implementation of automatic
quality control by means of an electronic probe.
With a CNC machine, precision can be achieved because
the computer repeats the same task over and over
again therefore decreasing the chance for human error
and increasing the chance for precise parts.
With precision machining, standard cutters used
are made of either a ceramic or carbide material.
But,
in recent years there has been an introduction of
diamond tipped cutters with a cutting edge radius
of 100 degrees
or less, thus increasing the capabilities of precision
machining and decreasing the need for polishing or
precision grinding.