Spiral vase option generates no gcode for mach3/linuxcnc mode #2350

ftkalcevic opened this Issue Nov 10, 2014 · 4 comments


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If I select G-Code Flavor: Mach3/LinuxCNC, I get no spiral part of the gcode. It works if I select Marlin (although this Gcode isn't usable on a linuxcnc machine). I tried this on 1.20 and 1.21.

This example gcode shows the transition from bottom layers to spiral. The x/y barely move, and Z keeps increasing...

G1 X3.577 Y13.021 A41.70256
G1 X1.794 Y13.285 A41.80276
G1 X0.673 Y13.340 A41.86511
M106 P255
G0 Z0.700 F13200.000
G0 X0.659 Y13.047 F13200.000
G0 Z1.000 F13200.000
G0 X0.646 Y12.796 F13200.000
G0 Z1.300 F13200.000
G0 X0.634 Y12.544 F13200.000
G0 Z1.600 F13200.000
G0 X0.622 Y12.293 F13200.000
G0 Z1.900 F13200.000
G0 X0.610 Y12.042 F13200.000
G0 Z2.200 F13200.000

alexrj commented Nov 10, 2014

Right. That's because Spiral vase acts as a G-code filter and it looks for E instead of A.

@alexrj alexrj added this to the 1.2.2 milestone Nov 10, 2014
@alexrj alexrj added the Verified bug label Nov 10, 2014

One other issue with spiral vase - you need to have Print Settings | Layers and Perimeters | Advanced | Seam Position - set to Algined. Random breaks spiral vase.

@alexrj alexrj added Fixed and removed Verified bug labels Nov 23, 2014
alexrj commented Nov 23, 2014

I fixed the mach3 issue. Thank you for reporting that.

Regarding your last comment, the Seam Position option is ignored when using Spiral Vase. Can you check with Slic3r 1.2.1?


It looks ok. I was running from source (master) with a version between 1.2.0 and 1.2.1. I had some other strange behaviours (missing layers when scaling) but that has all gone away with what is currently in master (so I can use the mach3/linuxcnc spiral vase).

PS mach3/linuxcnc do use G0

@alexrj alexrj closed this Nov 25, 2014
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