npt threadmilling

[ROB]

i ned help on how to make

an npt threadmilling program

using mc8.

i don't see any npt option on the parameters for doing threadmill on mill 8.

thanks!!!

[gcode]

Rob,

My experience with threadmilling is limited.

When I have thread milled NPT threads I used a tapered cutter. The cutter is long enough

to do the whole thread in one pass.

You ramp on, move one complete circle with 1 thread of z move z move and ramp off.

The cutters are not cheap, but they pay for themselves in machine time because you only make one pass.

The cutters are available as solid carbide endmills for smaller sizes and insert mills for the bigger sizes.

There is a company in CA that makes solid

carbide thread mills all the way down to 6-32 internal threads!!