Re: Can You Machine NURBS?

> While I've heard of NURBS, I hadn't heard of "NURBS G-code". What

are

> the specialized Gcodes involved? do you have a sample and/or a
> reference? I'd thought it might be neat to do an "ellipse Gcode",

but

> then I don't cut many ellipses (or parabolas!)!
>
> Alan KM6VV

Alan,
I have never cut metal using a Nurbs toolpath, but I have produced a
sample program that the Dolphin 3DCAM system outputs using the only
nurbs post processor that I currently have for it. Here is a short
section of it:
%
:PG ENG SECOND CORE
G28G91X0Y0Z0
(Plane-Finishing)
T01 M06
G43 H01 Z0. S11059 M03
G00 X0.023 Y-59.494 Z15.316
Z-70.469
G01 Z-71.469 F600
G05P10000
G6.2 P3 K0 X0.023 Y-59.494 Z-71.469 F1200
K0 Z-71.315
K0 Z-71.161
K1
K1 Z-71.16
K2 Y0.017 Z11568.072 R0.005
K2 Y59.494 Z-71.16 R1
K3
K3 X0.023 Y59.494 Z-71.161
K3
K3
K3
G01 X1.023 F600
G6.2 K0 X1.023 Y59.494 Z-71.161 F1200
K0
K0
K1 Y0.004 Z11728.474 R0.005
K1 Y-59.494 Z-71.161 R1
K2
K2
K3 Z-71.315
K3 X1.023 Y-59.494 Z-71.47
K3
K3
K3
G01 X1.194 Z-71.459 F600
X1.708 Z-71.451
X2.023 Z-71.45
Z-71.47
G6.2 K0 X2.023 Y-59.494 Z-71.47 F1200
K0 Z-71.316
K0 Z-71.162
I wish I could give you some more info on what it all means, but I
cannot.

Dave Pearson