Write a program

Use $3/16$ Dia Cutter for arc $-$ use g$90-$ cut to a depth of$.060($R Method$)$

Use $$ Dia cutter for circle$-$ use g$90-$ to cut a depth of $\mathrm{.}040($I$,$J$,$K Method$)$ Do the arc first

Use $3/16$ em for channel of $0\mathrm{.}030$ each $(0\mathrm{.}090$ total$)-$ in from edge