Purge and prime nozzle



  • I'm desperately looking for a way to start all my prints with a light purge and prime my nozzle.

    I would like the front right of my bed to a place where the impression is not possible (I know my X&Y) that my nozzle purges a small amount of material then a light rubbing over a small distance to clean .

    To be included in the slicer startup G-Code or as a file? Do you have an idea, or are you using something extra? Thank you


  • Moderator

    I use this for a nozzle prime and it works quite well.

    ;M98 P"0:/sys/PrimeNozzle.g"
    
    G90 			; Absolute positioning
    G1 X1 Y270 F6000 	; Move to back left corner
    M400 			; clear movement buffer
    M116 			; Wait for temps
    G1 Z0.3 F100		; Move Z to prime height
    G91 			; Relative positioning
    M83 			; Relative extrusion
    G1 E5 F300 ; pre-prime nozzle
    G1 X40 E10 F300 	; Prime line
    G10			; Retract
    G1 Y-1 X1 F10000 	; Wipe nozzle
    M400
    

    Obviously you'd need to make adjustments for your printer. In my case the print head is homed to the back left corner so that's where the nozzle prime occurs at the start of the print. The amount extruded is based on a 0.6mm nozzle.

    The end result is a small tab of filament that is easy to remove from the bed and leaves the nozzle very clean before the print starts.



  • @Phaedrux said in Purge and prime nozzle:

    Je l'utilise pour une buse d'amorçage et cela fonctionne assez bien.

    Perfect, I'll look into it as soon as I have some time ... Thank you



  • @Phaedrux said in Purge and prime nozzle:

    Le résultat final est une petite languette de filament qui est facile à retirer du lit et laisse la buse très propre avant le début de l'impression.

    I have modified some values ​​to adapt them to my configuration, and it works very well ... Thank you


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