That code is testing the 180 degree issue, which is not usually a major
problem as far as accuracy is concerned. Try using a R value of 5.002,
instead of 5.0025. In this case the arc does not technically fit. Some
controllers throw a fit and some quietly fudge the radius to fit. I
think LCNC fudges the radius, adding a tiny amount of error but it won't
be enough to measure.
Try using an R arc that's really close to a circle. Tiny rounding errors
in the X,Y coordinates can move the arc all over the place.
Les
On 10/02/2022 00:17, andy pugh wrote:
Thde docs state that a 7% difference was seen, but with some brief
experimentation I can't see it:
F1000
G0 X0 Y0
G2 X10 Y0.1 R5.00025
G0 X0 Y0
G2 X10 Y0.1 I5.0 J0.05
M2
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