On Mon, 11 Jan 2021 at 15:24, Robert Ellenberg <[email protected]> wrote:
> G93 G1 Z0.001 A10 F86.2 > > The XYZ distance is 0.001", and the computed feed rate would be 0.001 * > 1/86.6 IPM or ~0.057 IPM. If this is forced to be 0.1 IPM, then the > effective feed rate is about twice as high as it should be. You can see the > effect get worse if the ABC motion is longer or the XYZ motion is shorter. I can imagine someone doing full rotations of A while incrementing X .001 per rev. In that case the feed rate would be 64(?) times as high as requested, extrapolating your figures. > > This is a bit of a corner case, but it's nasty because an offending line is > difficult to spot by eye in a complex program, and I doubt there's a way to > prevent CAM from producing them (since the commanded motion is technically > correct G-code). I think that it is wrong enough to be a bug, and would support putting it in 2.8. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
