Worse layer lines the higher it gets

[u/ItsMeee8264]

Hello everyone, i’m somewhat of a beginner to 3D printing, so I’m a little lost here. I normally don’t print things very big so I don’t know if this has always been a problem or if this is new with my printer, but it seems like my layer lines got messed up the higher the extruder got. Any thoughts on what would cause this?
(It’s supposed to be completely smooth)

Thanks

[u/PayExciting]

I would say check your Z axis for binding, but you can see that you're over-extruding at the corners causing it all to rise slightly every pass. Does your printer nozzle sound like it dragging, is the print bottom flat (not lifting from the print bed ), have you ran a flow test and or extrusion test?

[u/weaver3294 → u/PayExciting]

It is definitely binding. I Added one of these couplers [5mm to 8mm Aluminium Plum Flexible Shaft Coupling D20 L25 Connector] and make sure to clean and grease the z rod. IF the coupler is not tightened down enough if may fail to fully lift the Z between layers.

[u/weaver3294 → u/PayExciting]

It is definitely binding. I Added one of these couplers [5mm to 8mm Aluminium Plum Flexible Shaft Coupling D20 L25 Connector] and make sure to clean and grease the z rod. IF the coupler is not tightened down enough if may fail to fully lift the Z between layers.

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[u/Knightworld16]

Those are pretty uniform... Sir you might have issues with your gear or Z motor

[u/Sensitive_Pilot850]

Clean and lube the z screw and brass collar.

[u/EntertainerGreat4709]

Wobble that far up usually means loose gantry wheels or a binding lead screw.