[HuFlungDung]

This problem may be dependent on your machine controller's specifications. What kind of machine? How are solitary A axis feedrates to be commanded: what units?

Typically, simultaneous XA moves will be controlled by the X axis linear feedrate (both axis must start and stop at the same instant), but A axis movements may need their own feedrate command, and it might have a degree/min requirement.

[marting]

Hi. What software are using to drive your CNC? Is it the same software that you use to designing / create your cutting paths with?

[dkaustin]

Martin, I am running Mach3 on a Tormach PCNC1100. Right now, I am reading up on axis scaling and radius correction in the Tormach manual. I haven't gotten back to the machine to check out the new settings. One thing I notice is that the numbers engraved before the cutter goes *ping* seem to be the correct width. I'm wondering if changing the A-axis scaling will compress the width of the numbers. We'll see.

[marting]

hi. is the encoder ppr setting in mach3 entered with the correct value? your problem sounds likely to be the culprid.

[dkaustin]

The ppr setting in Mach is certainly one thing to check. The immediate question, though, is why the A-axis feedrate calculated by Sprut is so high. (This is before the G-code gets anywhere near Mach). I'm thinking it may have something to do with the Tormach post-processor or with one of the Tormach xml files. Clearly, I have a lot more digging to do.

If anyone from Tormach is reading this, please feel free to chime in.