(HEAT EXCHANGER MOUTN USE 1/4" ENDMILL) F5 G00 X-6.375 Y0.625 M00 (DRILL HOLE) G00 X-6.375 Y4.625 M00 (DRILL HOLE) M00 (SWITCH TO 1/8" BIT) G00 X-0.87 Y0.495 M00 (DRILL HOLE) G00 X-5.05 Y0.495 M00 (DRILL HOLE) G00 X-0.87 Y4.63 M00 (DRILL HOLE) G00 X-5.05 Y4.63 M00 (DRILL HOLE) M00 (SWITCH TO 1/4" BIT) G00 X-1.25 Y1.0 M00 (DROP BIT) G01 X-0.75 Y1.5 G01 X-0.75 Y3.75 G01 X-1.25 Y4.25 G01 X-4.75 Y4.25 G01 X-5.25 Y3.75 G01 X-5.25 Y1.5 G01 X-4.75 Y1.0 G01 X-1.25 Y1.0 M00 (RAISE BIT) G00 X-7.0 Y0 M00(DROP BIT) G01 X0 Y0 G01 X0 Y5.25 G01 X-7.0 Y5.25 G01 X-7.0 Y0 M00 (DONE)