Tool life is the time a tool can be reliably be used for cutting before it must be discarded/repaired.
Some tools, such as lathe bits are regularly reground after use.
A tool life equation was developed by Taylor, and is outlined below,
An important relationship to be considered is the relationship
between cutting speed and tool life,
Although the previous equation is fairly accurate, we can use
a more complete form of Taylor's tool life equation to include a wider range of cuts.
