Calibration is one of the most important steps to a 3D print. If your bed is not level, the print itself will not come out level and will run into issues. To calibrate your printer bed, you will need to power on and home the printer. Homing the printer means you need to put the printer in the starting position or front left of the bed. For our Maker Select 3D Printer, this setting would be under the Quick Settings section as Home All. Once the printer has moved to the home location, you may now power off the printer. Once the printer is powered off, you should be able to freely move the X-axis of the printer head as well as the Y-axis of the printer bed. Since these can now move freely, you will need to move the printer head to each corner of the bed and make sure a single piece of standard printer paper can slide between the bed and the nozzle with just a small amount of friction. We recommend checking each corner as well as between the corners and the center of the bed. Once your printer is calibrated, we also recommend printing a small simple print like a calibration cube to make sure the printer can put down a first layer and the other layers stay even.