or you could do what i do when in doubt....use a Lyndex spring loaded tapping head and just do
G00X___Y___
Z0.1
S260M03
G01Z-0.75F0.0768
M04
Z0.1F0.0770
note the feed rate variations. this is to allow for the spring action to work properly and not overcut the threads. if you were hard driving the tap you would have to program the feed exactly. |