Interpreting gcode R syntax

CAD & CAM Tool Chain ChiliPeppr
1

Hello guys, I created a gcode file to use a drag knife, and whenever I see it in chilipeppr I see some arcs with R gcode syntax, I was wondering why the movement doesnt follow the arc, or what does the arc mean?, this is my gcode:

G90
G0 X0.0000 Y0.0000 Z0.8000
(Dragknife Toolpath3)
T1
(Dragknife End Mill)
F50.0
F20.0
S0
G0 X0.6291 Y1.4893 Z0.2000
G1   Z-0.0500 F20.0
G3 X0.3364 Y2.1962 R1.0000 F50.0
G1   Z-0.1400 
G1 X7.4141 Y9.2703 
G0   Z0.2000
G0 X9.7718 Y9.7373 
G1   Z-0.0500 F20.0
G3 X8.3572 Y8.3234 R1.0000 F50.0
G1   Z-0.1400 
G1 X1.2794 Y1.2494 
G0   Z0.2000
G0 X6.0004 Y9.2749 
G1   Z-0.0500 F20.0
G3 X7.4141 Y9.2740 R1.0000 F50.0
G1   Z-0.1400 
G1 X10.0048 Y6.6781 
G1   Z-0.0500
G2 X8.5911 Y6.6790 R1.0000 
G1   Z-0.1400 
G1 X2.2207 Y0.3119 
G0   Z0.2000
G0 X-1.3138 Y1.5812 
G1   Z-0.0500 F20.0
G3 X0.0983 Y1.5787 R1.0000 F50.0
G1   Z-0.1400 
G1 X0.6582 Y1.0150 
G0   Z0.2000
G0 X3.0168 Y-1.3446 
G1   Z-0.0500 F20.0
G2 X1.6050 Y0.0720 R1.0000 F50.0
G1   Z-0.1400 
G1 X1.0469 Y0.6300 
G1   Z-0.0500
G2 X2.7540 Y-0.0771 R1.0000 
G0   Z0.2000
G0 Z0.8000
G0 X0.0000 Y0.0000
2

Chilipeppr only knows how to do arcs without the r syntax. It is just an algorithm that doesn’t cover all dimensions of gcode derivations. Shouldn’t matter when you send it to your controller though.

3

Totally up for some pull requests in GitHub if you were up for tweaking the JavaScript to render the r values correctly.