Bed calibration squares

Bed leveling tool.
Fits 0.4 nozzles.
the height of the square are 0.4 mm high.
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HowTo: print the square and while print you adjust the bed so that it is level.
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Single squares are the dimensions entered in the file name.
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Small are from 50x50mm up to 120x120mm Meant the Fabricator mini etc.

Medium are from 50x50mm up to 150x150mm / 175x175mm are meant for Prusa i3

Big are from 50x50mm up to 200x200mm meant for Ultimaker 2/3 etc.
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I find this method to be a lot faster because you have a better visual inspection of how well the bed is leveled.

(write if you wish for other sizes or just have questions)