[xj0696]

looking to write a macro for lathe to cut any thread wondered if there was one already out there

[Geof]

What is wrong with the G76 threading cycle? It is really just a macro embedded in the machine controller system. You have to enter parameters related to your desired thread just the same as you would need for any other macro.

[xj0696]

this macro would be for multiple or single lead threading for people who have little to no programming experience. and it would be that much faster for me

[Geof]

If they have little or no programming experience how can you trust them to enter the correct values into a macro?

[xj0696]

comments next to the variables that need to be defined

[sinha_nsit]

Comments can be added to G76 block also.
The most important thing is that no-one can possibly write macros incorporating full functionality of such a canned cycle, in a reasonable time frame.
No wonder these are options, sometimes.

G76 can be used for multi-start threads also. The trick is to axially shift the start point of the next helix by pitch distance. F-word would be lead.