During printing, it is important that the first layer sticks well to the build plate. Leveling the build plate ensures that you have the correct distance between the build plate and the nozzle during printing, for optimal adhesion. This must be done before using the Ultimaker Original+ for the first time and then periodically.
When adding the printer to Ultimaker Cura, the software will guide you through the build plate calibration steps. First, the print head and build plate will move to the Home positions. The print head will move to the front-left corner and the build plate will move up. After this, you can follow the steps below for leveling the build plate.
Use the up/down control buttons until the nozzle just touches the glass plate and check if the Z limit switch is triggered. If not, you may have to adjust the height of the Z limit switch.
Adjusting the build plate
The Ultimaker Original+ uses a three-point build plate leveling procedure.
The print head will first move to the front-left corner. Adjust the thumb wheel under the build plate to raise or lower the glass plate. The build plate is at the correct height when the nozzle is just touching the build plate.
When finished with this corner, click Move to next position and the print head will move to the next point. Repeat these steps for the front-right corner and the back-center position.
Tip: For accurate bed leveling, it is advised to use a piece of paper. Slide the paper between the nozzle and build plate at each point and make sure that you feel slight friction when moving the piece of paper.
Check bed calibration
During the last step of the configuration wizard, the Ultimaker Original+ will print a square on the build plate in order to check if the build plate has been properly calibrated. Before starting this test print, ensure that filament has been loaded into the printer.
You can also run your own test print. Experienced users can adjust the position of the build plate during printing to fine-tune.
Successful first layer
When 3D printing, it is very important that the first layer is nicely pressed onto the build plate with flat lines of filament and no gaps in between. Check the following images to see a successful first layer and two unsuccessful ones.
Successful first layer
The print properly sticks to the build plate and all lines are nicely uniform.
The adhesion and extrusion are good, so there is a high chance of print success!
The build plate is too close to the nozzle. The material cannot extrude from the nozzle properly. The first layer is very thin.
Relevel the build plate with a bit more distance between the nozzle and the build plate.
The build plate is too far from the nozzle. The lines are not pressed into the build plate. There is a high chance that the print comes loose from the plate during printing.
Relevel the build plate with less distance between the nozzle and the build plate.