Geeetech

Hello.
Please tell me.
Printing with Rostock 301 but printing the actual dimensions small.

Design dimension X 31 mm ⇒ print size 28 mm
Design dimension Y 23 mm ⇒ print size 21.5 mm
Design dimension Z 7 mm ⇒ print size 6.5 mm

Bad after-sales service 04/01/2004 to 2018

You should calibrate and increase the number of stepper motor steps per 1mm for each axis, respectively.
Correct this parameter until you get the right real dimension.