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Bumps and popping on first layer?

rectify

By rectify
in Ultimaker Cura

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rectify

rectify 0

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Posted · Bumps and popping on first layer?

Hi guys, been trying to figure out what is going on with my printer, during only the first layer in having these popping sounds and what looks like overextrusion. Im printing on glass that is almost perfectly leveled with a BLTouch so that compensates even more. This only happens on the first layer and the rest is fine. I have tried;

Ajusting Z offset for different squishes

drying my filament in the oven

different nozzles

every axis belt is tight, no wobble.

 

Any ideas? It almost looks like pressure is being built up from overextrusion but im not entirely sure. it only happens in certain straight line runs, and tohers look perfectly fine.

https://imgur.com/a/X6b5CPK

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    gr5

    gr5 1,967

    Posted
    Posted · Bumps and popping on first layer?

    I agree with smartavionics.  If you can manual level then that is best.  Turn the leveling screws so the nozzle is about 0.1mm farther from the print bed than it was when you did this print in the photo.

     

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