Spindle synchronized moves

phoenix

Hello, I am converting a small lathe to CNC and having a spare Duet3 board I thought of using it.

I see multiple reports of people having used it successfully but I cannot find any information on making moves synchronized with spindle, specifically threading (G76)? Is this something available that I have missed?

Cheers
Pierre

jay_s_uk

@phoenix I don't believe thats supported at the moment

o_lampe

@phoenix There is no infinite rotation in RRF.
But there are workarounds. You can define your spindle as a very long axis. It will take days to reach the end. In a way, this can be considered infinite
Another workaround for G-codes unknown to RRF is to write your own macro.
In your specific case it would be named G76.1
Now you have to postprocess the gcode file you want to run by search&replace G76 with G76.1
When you run the file, RRF will automatically start the macro when the line comes up.
If G76 has some parameters you can postprocess them too, but it gets complicated. Maybe it's easier to write several macros for each thread-pitch you want to cut.