first layer test 60x60 mm square z calibration —

Founded first layer test 60x60 mm square z calibration models & stl files for printing
Prusa i3 Full Bed Test Print
MartinHopkinsDesign
Prusa Test Cube
Pruznak
20mm Test Cube
reddaugherty
caliacat x y z test
MageWesley
40x40x40 mm cube
Dsyr2005