Clean the printer

For the best print results, it is important to keep the Ultimaker 2+ clean while using it. It is not advised to use the Ultimaker 2+ in a room where it can easily be covered with dust. It is also important to regularly remove small pieces of material that might be in the printer. Some parts of the Ultimaker 2+ might require more regular cleaning. Instructions for this are described below:

Glass plate

After printing, there might be excess glue stuck to the glass plate, which can cause an uneven print surface. Alternatively, removing a print may reduce the adhesion quality of the layer of glue. Therefore it is advised to regularly clean the glass plate and re-apply glue.

Before starting a new print, always check the surface of the glass plate. At least once a month, clean the plate thoroughly by following these steps:

1. Remove the glass plate

  • Manually position the build plate at the bottom of the Ultimaker 2+.
  • Open the front build plate clamps.
  • Slide the glass plate forwards and take it out of the printer.

⚠ Caution: Make sure that the Ultimaker 2+ is turned off and the build plate has cooled down before handling.

2. Clean the glass plate

  • Use lukewarm water and a sponge to remove any glue layers. If necessary, use some soap or detergent.
  • Dry the glass plate with a clean cloth.

Removing the glass plate
Cleaning the glass plate

3. Place the glass plate on the heated bed

  • Hold the glass plate with the warning sticker facing upwards.
  • Slide the glass plate onto the build plate and ensure that it snaps into the build plate clamps at the back.
  • Close the build plate clamps at the front to secure it in place.

Closing the build plate clamps


While using the Ultimaker 2+, material can accumulate around the nozzle. Although this will not damage your printer, it is recommended to try keeping the nozzle clean, in order to achieve the best print results.

Before starting a new print, always check the nozzle. At least once a month, remove the plastic from the outside of the nozzle by taking the following steps:

1. Heat up the nozzle

  • On the Ultimaker 2+, navigate to "Maintenance > Advanced > Heat up nozzle".
  • Rotate the dial to set the temperature to 150 ºC.

2. Remove the material

  • Wait for the plastic around the outside of the nozzle to soften.
  • When the nozzle is hot, carefully remove the material with tweezers.

⚠Caution: Do not touch the nozzle and be careful while cleaning it as it will become hot.

Heat up nozzle to 150ºC
Remove the material from the nozzle

Feeder and Bowden tube

After extended use, or when material has been ground down by the feeder gears, small filament particles can accumulate in the feeder. These can end up in the Bowden tube or nozzle, which can impact print quality.

Clean the feeder and Bowden tube at least once a month, or after experiencing an issue with filament grinding.

Clean the feeder

1. Remove the filament

  • On the Ultimaker 2+, navigate to "Material > Change"
  • Remove the filament and turn off the printer.

Change the 3D printing material

2. Clear the filament particles

  • Blow into the feeder to get the filament particles out. If necessary, use an air compressor.

Clean the feeder using the compressor

Clean the Bowden tube

Particles in the Bowden tube can impede smooth movement of the filament or mix colors. To clean it, the Bowden tube has to be removed from the printer.

1. Remove the filament

  • On the Ultimaker 2+, go to "Material > Change"
  • Remove the filament from the feeder and turn off the printer.

2. Remove the clamp clips

  • Place the print head in the front-right corner.
  • Use your fingernail to remove the clamp clips from the tube coupling collets at the print head and feeder.

Removing the clamp clip

3. Loosen the Bowden tube from the printer

  • Press down on the white tube coupling collet.
  • At the same time, pull the Bowden tube upwards, out of the print head.
  • Repeat these steps for the feeder.

Insert the Bowden tube into the print head
Cable clips on the Bowden tube

Tip: The cable clips that hold the Bowden tube to the braided sleeve do not have to be removed, you can leave them in place.

4. Insert a piece of sponge

  • Cut off a small piece of sponge or roll a piece of tissue into a small ball.
  • Insert it into the feeder end of the Bowden tube.
  • Push the sponge or tissue all the way through the tube with a length of filament.

Inserting a piece of sponge

Tip: To clean the tube efficiently, make sure the sponge or ball of tissue is a tight fit inside the Bowden tube. Please note that if it is too big it will be difficult to push through.

5. Insert the Bowden tube into the feeder

  • Press down on the tube coupling collet in the feeder.
  • Push the Bowden tube all the way in.
  • Make sure that the braided sleeve goes behind the Bowden tube, from left to right.
  • Secure the tube with the clamp clip.

Insert the Bowden tube into the feeder

6. Insert the Bowden tube into the print head

  • Press down on the tube coupling collet in the print head.
  • Push the Bowden tube all the way in.

7. Ensure the Bowden tube is correctly inserted

  • Let go of the tube coupling collet and gently pull the Bowden tube, along with the tube coupling collet, approximately 2 mm upwards.
  • Hold the tube coupling collet up with your fingernail.
  • While holding the tube coupling collet up, push the Bowden tube down again.

8. Secure the clamp clip

  • Place the blue clamp clip around the tube coupling collet to secure the Bowden tube.

Removing the Bowden tube
Ensure the Bowden tube is fully inserted
Secure the clamp clip

Inside of the printer

Small pieces of material can gather inside the printer, including the initial extrusions. Remove these from the inside of the printer with a cloth or vacuum cleaner. Pay extra attention to the area around the Z limit switch.

⚠ Caution: Leaving larger objects on the bottom panel can lead to errors, as they can obstruct the build plate when homing.