MBL test pattern

How to test Mesh Bed leveling using MBL test pattern

With the MBL-test-pattern you should be able to see how good MBL is working. All 9 pieces should have the same layer adhesion as well surface finish.

This test should be also show if a new firmware still does the job or got better or even worse. it makes sense to redo this after a firmware update.

With the First layer calibration you should have the "perfect" Live-Z. But it may be different for the center, so please follow these instruction:

Write down the 1st layer cal value you are using.
Open the attached MBL-test-pattern.3mf file in PrusaSlicer and set your Printing (0.2mm Speed or Quality), Filament and Printer settings to the material and printer you are using.
remove all edge patterns a_ to h_HyperCal.stl so you just have the center_HyperCal.stl left on build plate.
Slice it and export the gcode.
Clean the bed.
Print the center_HyperCalif the print looks good / perfect continue with MBL-test-pattern
- Redo this print and adjust the Live-Z until you are happy with the result and write down the Live-Z value for the center print.
  
  Don't forget to clean the bed each time.

Open the attached MBL-test-pattern.3mf file in PrusaSlicer and set your Printing (0.2mm Speed or Quality), Filament and Printer settings to the material and printer you are using.
Slice it and export the gcode.
Clean the bed
Print the whole pattern.

If MBL is working fine all 9 test pattern prints should have the same good adhesion and surface finish.

If they are not you can focus to print one by one that aren't good:

Connect your printer via USB to Pronterface/Octoprint
Run G80 command and after that G81
- Copy/save the G81 results for later.
Open the attached MBL-test-pattern.3mf file in PrusaSlicer and set your Printing (0.2mm Speed or Quality), Filament and Printer settings to the material and printer you are using.
remove all except the **one **you want to fine tune / do research on, so you just have ONE left on build plate.
Slice it and export the gcode.
Clean the bed
During printing the one pattern try to fine adjust the Live-Z so it looks "perfect" / equal to the center print.
- Redo this print until you are happy with the result and write down the Live-Z value for that print.
  
  Don't forget to clean the bed each time.

If you want to report back your results, please add at least following information: