metric vs standard designation on threadmills

[DUM1]

I have another person program I am running the thread mills are not working out, after the 5th time I open the file and see that the thread mills are under the metric designation, so I say hey? they say doesn't matter because it's driven off of the threads per inch designation.

thoughts?

[jstell]

What is not working out?  If it's a pitch problem, that should be set on toolpath parameters for single form cutter, or by tool definition if multi-form, and it'll be greyed-out on in the toolpath parameters.

Single or multi-form?

If multi-form, OD or ID?

If you use multiform (insert) designed for ID to cut OD thread, it'll cause problems.  Makes the minor small before you can get pitch diameter in tolerance.  (Don't ask me how I learned this.)