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Filament being kicked out ??

Posted by Rooski

Rooski

Filament being kicked out ??
March 02, 2015 03:09PM

Registered: 13 years ago
Posts: 93

for some reason now whenever i start a print in repetier host sliced with cura, it homes the axis waits for nozzle temp then goes to start position then proceeds to reverse out all the filament from the extruder and begins the print ... i cant figure out why.

here is a snippet from the beginning of the gcode.

;Generated with Cura_SteamEngine 14.12
; Default start code
G28 X Y Z; Home extruder
G90 ; Absolute positioning
M82 ; Extruder in absolute mode
; Activate all used extruder
M104 T0 S215
; Wait for all used extruders to reach temperature
M109 T0 S215
;Layer count: 96
;LAYER:0
M107
G0 F4800 X19.055 Y17.819 Z0.300
G0 X18.944 Y19.720
;TYPE: SKIRT
G1 F1740 X19.055 Y17.819 E0.02121
G1 X20.920 Y16.239 E0.04845
G1 X21.134 Y15.874 E0.05316
G1 X21.151 Y15.823 E0.05376
etc.

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dc42

Re: Filament being kicked out ??
March 02, 2015 03:58PM

Registered: 10 years ago
Posts: 14,672

Try adding G92 E0 to the start gcode.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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iamdarkyoshi

Re: Filament being kicked out ??
March 02, 2015 05:09PM

Registered: 9 years ago
Posts: 98

Quote
dc42
Try adding G92 E0 to the start gcode.

I would try this. It fixed my issue. Some slicers do not automagically add it, and it ends up taking a whole bunch of filament out. Cura seems to do this. It ends up telling the extruder to move from wherever it is currently to 0, and makes a mess. Adding this line of code fixed mine.