How to install the Nextruder V6 Nozzle Adapter (XL single-tool)

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Step 1 Introduction

⬢This guide will take you through the installation of the Nextruder V6 Nozzle Adapter on the Original Prusa XL.

For the installation of the Nextruder V6 Nozzle Adapter on the Original Prusa MK4 go to the dedicated guide: How to install the Nextruder V6 Nozzle Adapter (MK4)

⬢V6 nozzle is available in our eshop prusa3d.com.

The following instructions are compatible with all V6 nozzle diameters.

⬢Nextruder V6 Nozzle Adapter is shipped with the Original Prusa XL. And it is available in our eshop prusa3d.com.

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Step 2 Tools necessary for this chapter

⬢For this chapter, please prepare:

⬢TX 8 Torx key

⬢2.5mm Allen key

⬢Wrench 13-16

⬢Universal wrench

⬢A cardboard box for use as a heatbed protection during the assembly. Hint: use the Prusament box.

⬢Small brass brush for cleaning the nozzle

Step 3 Preparing the printer

⬢Manually move the X-axis assembly all the way to the front side of the printer.

⬢Move the extruder approximately to the center of the X-axis.

⬢If you have loaded the filament, unload it from the hotend. On the screen, navigate to Filament -> Unload Filament.

WARNING: The hotend and heatbed are very HOT. Do not touch these parts!!!

⬢Remove the filament from the hotend. It is not necessary to completely remove it from the printer. Just a few centimeters (inches) above the extruder.

Step 4 Cleaning the hotend

WARNING: The hotend and heatbed are very HOT. Do not touch these parts!!!

For the following steps, it is necessary to have the heaterblock and the hotend clean from the remains of the filament. Otherwise, it can be difficult to release the nozzle.

If you have a Prusa hotend sock on the hotend, remove it.

⬢On the printer screen, go to Preheat and select the latest used material. (e.g. ABS)

⬢Wait at least 5 minutes. The remains of the filament must be warmed up slightly so that they can be removed more easily.

⬢Using the brass brush, carefully clean the heaterblock and the hotend from the filament residue. Avoid contact of the brush with the hotend cables, as this could cause a short circuit.

⬢When the heaterblock and the hotend are perfectly clean, cool down the printer. On the screen, navigate to Preheat -> Cooldown.

Wait until the hot parts are cooled down to ambient temperature. It takes approximately 10 minutes.

Step 5 Preparing the printer

Before you proceed, it is recommended to protect the heatbed.

⬢Make sure the heatbed is cooled down to ambient temperature. Place the empty cardboard box approximately to the front center part of the heatbed.

⬢From the rear side of the printer, turn the power switch OFF (symbol "O").

⬢Unplug the PSU cable.

Step 6 Disconnecting the hotend

⬢Open the dwarf-cover-door to access the electronics board.

⬢Disconnect the hotend thermistor cable.

Each connector has a safety latch. It is necessary to press the latch before disconnecting. Otherwise, the connector may get damaged.

⬢Disconnect the hotend heater cable.

⬢Leave both cables free for now.

Step 7 Removing the hotend

⬢Remove the x-carriage-cover from the X-carriage.

⬢Hold the hotend with your right hand.

⬢Using your left hand, insert the Torx TX 8 key all the way through the X-carriage until it reaches the grub screw in the extruder. Loosen the screw. Do not remove the screw, a few turns are enough!

⬢Carefully pull the hotend assembly out of the extruder.

⬢At the same time push the hotend cables behind the fan out of the extruder.

Step 8 Removing the Prusa Nozzle

⬢Using the 13mm cutout in Universal wrench X grasp the heaterblock.

⬢Using the 7mm cutout in the Universal wrench Y grasp the nozzle and loosen it.

⬢Manually release and remove the nozzle with nub from the hotend assembly.

Step 9 Installing the V6 nozzle: parts preparation

⬢For the following steps, please prepare:

⬢Nextruder V6 Nozzle Adapter (1x)

⬢V6 Nozzle (1x)

Step 10 Installing the Nextruder V6 Nozzle Adapter

⬢From the side with cables, screw the Nextruder V6 Nozzle Adapter to the heaterblock.

⬢Hold the heaterblock in your hand and tighten the Nextruder V6 Nozzle Adapter by the universal wrench.

⬢From the opposite side of the heaterblock, screw in the V6 nozzle. Do not tighten it completely. Leave a 2 - 3 mm gap between the nozzle and heaterblock.

The final tightening of the nozzle will proceed later. Please continue to the next step.

Step 11 Connecting the hotend

⬢Push the hotend cable behind the heatsink fan up to the electronics.

⬢Locate the hole in the heatsink from the bottom of the extruder and insert the hotend nub into the heatsink.

Do not tighten the grub screw to secure the hotend yet! Wait for the instruction.

⬢Connect the hotend heater to the upper slot on the electronics board.

⬢Connect the hotend thermistor to the lower slot on the electronics board.

⬢Keep the hotend assembly hanging on cables. Avoid to pulling on the hotend.

Step 12 Tightening the nozzle

In the following steps, we will need to heat up the nozzle. Avoid touching the HOT parts on the hotend.

Remove the cardboard box from the heatbed!

⬢Plug the power cord to the printer and turn it ON.

⬢Now, you will need to set the nozzle temperature to 255°C. On the printer screen, navigate to Preheat-> ABS.

WARNING: From now, the hotend and heatbed are very HOT. Do not touch these parts!!!

⬢Grasp the heaterblock with the wrench 13-16. Avoid pulling on the hotend!

⬢Tighten the nozzle using the universal wrench. Do not overtighten it, you can damage the thread. Use the sufficient force. The prescribed tightening torque is 1.5 Nm.

NOTE: Avoid bending the hotend assembly while tightening! After that, there will be a gap of approximately 1 mm between the nozzle and the heater block.

Step 13 Tightening the hotend assembly

⬢Cool down the printer. Go to Preheat -> COOLDOWN.

⬢ Wait until both temperatures drop below 35°C. It may take about 10 minutes. See the status bar at the bottom of the screen.

⬢Make sure, the hotend is cooled down. Push the hotend assembly all the way in.

⬢Rotate the heaterblock as in the picture. There must be approximately 35° - 40° angle to avoid damaging the hotend cables.

⬢Maintain the position and using the TX 8 Torx key tighten the grub screw to secure the hotend. Do not use extra force while tightening, it may damage the hotend nub.