Gcode for a longer into line?
I recently replaced my 0.2 nozzle but I couldn't find the exact model the Prusa Mk3 uses so I went for a Sienoc Noozle that is slightly different.
It's bigger than standard nozzle so it takes up more time to extrude with a proper flow the PLA, as a result the print has a few bad lines at the start then it prints perfectly.
I know I can just kick up the number of the skirt lines but is there a way to fix the intro Gcode and make a longer intro line as well?
Thank you!
Re: Gcode for a longer into line?
That is a Mk8 nozzle. You want Mk6 nozzles for the E3D V6 hotend used on the Prusa printers. They are readily available on Amazon and elsewhere.
So far as the gcode, look for these lines under Printer Settings->Custom G-code->Start G-code:
G1 X60.0 E9.0 F1000.0 ; intro line
G1 X100.0 E12.5 F1000.0 ; intro line
The G1 lines tell the extruder to move to the specified position (only X is specified in these lines, so it's a horizontal move along X axis) while extruding the amount of filament specified in the E parameter. The 2nd line moves 40mm (from 60 in the previous command to 100) along the X axis while extruding 12.5mm of filament or 0.312 of filament per mm of X move. To make it longer at roughly the same size, you could replace that 2nd line with something like:
G1 X150 E28 F1000
I would suggest trying a proper nozzle first however. You can get the cheap crap-tastic kits off Amazon or order a genuine E3D part.
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Re: Gcode for a longer into line?
Many thanks, I'll follow your advice 🙂