Change the nozzle

The Ultimaker 2+ features the Olsson Block, an upgrade which was developed side-by-side with the community.

The advantage of the Olsson Block is that it enables nozzles to be easily swapped, giving more control over prints. Use a smaller nozzle to print fine lines for more detail, or use a larger nozzle to print thicker lines to decrease print duration.

A nozzle kit is already included with the Ultimaker 2+. The Maintenance Kit provides an extra set of 0.25 mm, 0.4 mm, 0.6 mm and 0.8 mm nozzles.

Easily replace the current nozzle, or switch to a different nozzle size, by following the steps below:

Parts required:

  • 1x 2312 Olsson nozzle 0.25 or
  • 1x 2313 Olsson nozzle 0.4 or
  • 1x 2314 Olsson nozzle 0.6 or
  • 1x 2315 Olsson nozzle 0.8

Tools required:

  • Flat nose pliers
  • Wrench (adjustable or size 7)


  • 10 minutes

Remove the current nozzle

1. Remove the filament

  • Ensure that the filament is removed from the Bowden tube.
  • On the Ultimaker 2+, navigate to "Material > Change".
  • Remove the filament and select "Cancel".

2. Perform the Atomic Method

Clean the nozzle by performing the Atomic Method. This minimizes the amount of leftover plastic that is inside the nozzle, making removal easier. It also cleans out that nozzle prior to storage, ensuring that no filament residue remains in the nozzle that may affect future prints. Keep the nozzle heated for the next step.

3. Unscrew the nozzle

  • Keep the nozzle heated using the last temperature used for the Atomic method.
  • Use a wrench on the nozzle and turn it counter-clockwise to remove it.


⚠ Caution: Do not touch the nozzle with your hands. When it is loose, catch it using a cloth or tissue.

Install the new nozzle

1. Screw in the new nozzle

  • Select the desired nozzle: 0.25, 0.4, 0.6 or 0.8.
  • Screw it into the heater block manually until hand tight.

⚠ Caution: Be careful, the heater block is still warm.

2. Tighten the nozzle

  • Use the wrench to tighten the nozzle completely.
  • To tighten it, turn the wrench clockwise.

⚠ Caution: It is important that the nozzle is securely connected to the heater block---however, over tightening it can also cause damage. Do not hold the wrench at the end of the handle to avoid using too much force.

3. Level the bed

  • With a different nozzle installed, the distance to the bed may have changed.
  • On the Ultimaker 2+, navigate to "Maintenance > Build plate". Follow the leveling procedure to ensure that the build plate is correctly leveled.


4. Configure in Cura

  • If a different nozzle size was installed, update the Cura settings to be able to print with it.
  • Select the correct nozzle size from the list in Cura, next to "Nozzle & Material".


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