![]() Irregular variation in layer height is caused by the extruder platform or the extruder not maintaining the proper height while you are printing. Irregular variation in layer height causing Z banding Ensure your printing temperatures are as uniform as possible.Complete your prints in an area that remains at a consistent temperature.Sometimes even your platform will expand and bow as its heats, and that is enough to impact the layer height and cause Z banding. These temperature shifts can cause some layers to spread out more than other layers due to the fact that they are extruded too soft. Temperature swings, even small ones, can lead to Z banding. ![]() Inconsistent temperature causing Z banding A tighter tolerance will lead to a more uniform filament diameter. Check the tolerance ratings of the filaments that you buy.Sample the filaments of new suppliers before purchasing large batches of filaments.Some low-quality filaments even have bubbles down the center, which will impact the cross-sectional area of your filament. Nonuniform filament diameter can cause inconsistent extrusion, so it is important that you ensure your diameter is as uniform as possible. Your filament diameter should be uniform so that there is not any variation in how it presses against the drive gear or how fast it feeds. Novice Expert on YouTube has a wonderful tutorial that goes over how to create your own coupler to fix Z banding, and you can find the tutorial here ]. In order to do this, you need some calipers and some sort of CAD software to model in. The fix for a bad coupler is simple, 3D print a new one. Z banding can also be caused by your lead screw being misaligned, and this can lead to Z banding that directly matches up with the thread of your lead screw.īut what if my lead screw is already straight? If you have verified that your lead screw is straight, but you are still getting the Z banding, you are really having an issue with your coupler. ![]()
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