GEEETech i3 (All Version): Calibration Kit

Hi,
in the last two years I’ve help lot of people to fine tune their GEEETech i3 series printer, and lot of time the solution, solved the “normal issues”, was the same… better calibration!
Each single time I give to people ask my help always the same identical instruction in order to do a better calibration, so now I’ve decided to directly share stl I normally use during calibration and write down instruction!
In this kit you’ll find:

Regular 100x100, and 100x100x100, brackets useful to ca