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nozzle hitting the metal clip that holds the glass bed.


georgefsmith

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Posted · nozzle hitting the metal clip that holds the glass bed.

When i start a print the nozzle dumps some filaments near the front left hand side next to the metal clip that holds the glass plate in position, it then travels to the right and HITS the metal clip that holds the right hand side of the glass plate.

It never used to do this and it had done hundreds of prints no problem. I updated the firmware but it still does it. I am using simplify to slice. i have another ultimaker 2 and using the same simplify it prints ok. I have a work around by having the clip half of the glass but its strange.

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    Posted · nozzle hitting the metal clip that holds the glass bed.

    Hi George,

    It sounds like the size you have set for your buildplate is off a little bit.

    What size have you set in S3D? Unfortunately I don't have it myself so I can't give you any directions, but that would be a very obvious reason.

    The filament dump it does prior to a print is called priming.

    It is building up pressure in your nozzle so it can do a extruder a solid first layer.

    Does your print start from the front right corner?

    Why does it move from front left, to front right, avoiding the left clamp and hitting the right clamp?

    Thanks!

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    Posted · nozzle hitting the metal clip that holds the glass bed.

    Why does it move from front left, to front right, avoiding the left clamp and hitting the right clamp?

     

    @SandervG

    It's just the default start-gcode from S3D. After priming at the front left corner: it "wipes" the material from left to right while the buildplate moves up (from z=20 to z=0 if i remember correctly).

    @georgefsmith

    These moves bring the nozzle very close to the right clip anyway. Perhaps the position of the y-endstop is slightly different on your second printer - that's why it becomes too close?

    I would edit the start-gcode and increase the y positions for the "wipe moves" a bit, or decrease the x-positions (or both...)

    If you need to use the full print area you have to modify this method anyway...

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