Configure RRF for a delta printer (FLSUN SR)

[fma]

Hi!

I'm configuring RRF for my FLSUN SR, and I'm not sure to understand the different values used by the M665 command... Is there a drawing showing how these dimensions are measured?

I found config files on 2 threads in this forum, but values seem to be the default ones generated by the online tool, and do not match the printer.

Thanks,

[droftarts]

@fma The only dimensions M665 really needs L (Diagonal rod length) and R (Delta radius) parameters. With those roughly measured (and B and H parameters roughly set), you can generally let delta autocalibration dial it in accurately. See https://docs.duet3d.com/User_manual/Tuning/Delta_calibration

See this image for what you are trying to measure:

Ian

[fma]

@droftarts Thanks for the drawing!

What accuracy (%) is needed for the different values?

[dc42]

@fma you should measure the effective rod length as accurately as possible. If your machine has a Z probe then auto calibration will tune the delta radius, so you don't need to set it as accurately.

[fma]

@dc42 Thanks! I do have a Z-probe.