Calibration Cube XYZ
This is a standardized model designed to validate correctness (it does not automatically calibrate for you). This model is focused on testing dimensional accuracy, infill/perimeter overlap settings, material flow, and ringing/ghosting.
Default size of the standard cube is 20mm.
Licence for the standard calibration cube: CC BY-SA 3.0, iDig3Dprinting https://www.thingiverse.com/thing:1278865
- Nozzle Size : 0.4
- Layer Height : 0.2
- Initial Layer Height : 0.2
- Line Width : 0.4
- Wall Line Count : 3
- Top/Bottom Thickness : 0.8 mm
- Infill Density : 8%
Printing Time = 30mn
By printing two cubes with different sizes you will be able to diagnose dimensional inaccuracy.
If the inaccuracy scales with the size of the cubes, the cause is steps/mm of your steppers. (note: you may also want to adjust the flow, and maybe redo some calibrations if the change is important).
If it does not scale, you can correct it by adjusting your Horizontal Expansion.
Identify if the infill pattern can be seen on the perimeters. Adjust Wall Line count and Top/Bottom Thickness. Top/Bottom Thickness, can create artifacts if it's too low (also known as Pillowing).
Identify gaps/spacing between wall lines. There should be a good overlap. If not, look to adjust your Flow settings.
Ringing (sometimes called "ghosting") is an effect where ripples appear on vertical surfaces, near small details on these surfaces. The ripples start occurring just after printing the small details. As the vibrations are caused by accelerating the print head, the improvements can be achived by reducing those accelerations.
- Reducing the maximum printing speed reduces the duration of the accelerations.
- Reducing the reduction of the acceleration speed directly reduces the acceleration and reduces the magnitude of the vibrations.
- If Enable Jerk Control is on, consider reducing Print Jerk.