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Help! Consistently uneven prints!

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Posted · Help! Consistently uneven prints!

I'm a teacher who is trying to fix the 3D printer at school. We have a Creality 10S and are using Cura software with PLA filament. On the right and back of the prints it is like the bed isn't level, but it clearly isn't because the front and left of the square prints fine on the right-back corner of the print bed. Every square comes out the same regardless of where it is printed on the bed.

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Posted · Help! Consistently uneven prints!

Looks like it's underextruding 2 of the sides only.  I don't understand why it's concentric squares - that's not a typicall bottom layer.

 

Anyway my guess is printing speed - I bet it is slowing down more at the junction of good and sides of the square and the slowdown allows pressure to build back up in the nozzle.  Try printing at half the current speed - at least for the bottom layer.

 

That should make it print more consistently.

 

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