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\viewkind4\uc1\pard\qc\cf1\b\f0\fs24 G81 (Deep Hole Drilling Cycle)
\par \pard
\par \cf2\b0\fs20 The command G81 performs a deep drilling operation, where the drill retracts completely out of the hole at each peck.
\par The definition of one of these operations is called a one pass cycle.
\par
\par If a repetition of the cycle is required, only the values that change need to be entered into the next block, ie, the Z depth.
\par
\par N0050 .......... ;
\par N0060 G00 X0.0 Z2.0 ;
\par N0070 G81 Z-20.0 F0.1 ;
\par N0080 Z-35.0 ;
\par N0090 Z-45.0 ;
\par N0100 Z-50.0 ;
\par N0110 G........ ;
\par
\par \cf0\f1\fs16
\par }