I designed this level tester for my own Anycubic i3 Mega and it worked pretty well. If you just started with your first Anycubic i3 Mega, you can find first instructions underneath.

Hint: If you use clips to fix for example a glass-bed you should set the "Level-tester" on 80%, otherwise your Hotend/case for the fans may crash with your clips.

Have fun!

For beginners:

Before you start printing this object, try to level your printer with a piece of paper. How? Let´s have a look..

1. Start your 3D printer
2. Click on "Tools"
3. Click on "Level"
4. Tightening down all the screws so you have more room to work with
5. Now start this this option, the printer will check every 4 corners. All you have to do is taking a piece of paper and try to stick it between the nozzle and the bed. There shouldn´t be much space left, you should feel some resistance.
6. After you finished all 4 corners you can print my "level tester"

To print my "Level-tester.stl" file you have to open it in a "slicer". This slicer converts data from your model to specific instructions for the printer. I use "Cura" for quite a long time now, felt pretty comfortable with it (and it´s free!). Just safe your result as an ".gcode" file and load it into your printer.

Thanks, Enjoy!