02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with...

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02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit - Installation How to install Bondtech extruder upgrade for the Prusa i3 MK2.5S / MK3S - Mosquito Written By: Joel Lennartsson 02. Prusa i3 MK2.5S / MK3S - Mosquito … 2020-05-15 [minor] v1.8 Approved Release: Guide ID: 49 - This document was generated on 2020-05-20 06:28:18 AM (MST). © 2020 support.bondtech.se/ Page 1 of 53

Transcript of 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with...

Page 1: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

02. Prusa i3 MK2.5S / MK3S - MosquitoUpgrade Kit - Installation

How to install Bondtech extruder upgrade for the Prusa i3 MK2.5S / MK3S - Mosquito

Written By: Joel Lennartsson

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INTRODUCTION

Product Page

This Guide relates to this Prusa i3 MK2.5S / MK3S Mosquito Upgrade Kit:

https://www.bondtech.se/en/product/prusa...

Acknowledgements

This is a co-development work with some awesome guys in the Prusa Community like ChrisWarkocki, Grégorie Saunier (Bear Upgrades), Olof Ogland, Erik Bjorgan, Josh Jones, Kyle Wiehe,Marc Evertz, Matt Harrison, Ocie Ward, Sando Bendig, Vecko Kojchevski (Vecko Extruder), and lastbut not least Steven Mölby that have provided excellent feedback and suggestions of how todevelop the "perfect" extruder setup for the Prusa series printer. A lot of work has been spent in thisproject and we have tried to listen to all the inputs in order to find a solution that can be fitted to aPrusa i3 MK2, MK2S, MK2.5, MK2.5S. MK3, and MK3S.

Compatibility

The upgrade is compatible with the following machines:

Prusa i3 MK2.5S

Prusa i3 MK3S

Additional Information

The pictures in this guide is captured using a MK3s printer but can be applied to MK2.5S, with theexception of connecting the cables to your board. Please check Prusa's electronics guide on how toconnect the cables on your specific board.

Before Performing The Installation

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Before installing your MK2.5S/MK3S Upgrade Kit with Mosquito fit, make sure you first performedthe Strip Reusable Parts procedure which Guide you can find here:

02. Prusa i3 MK2.5S / MK3S Upgrade Kit - Strip Reusable Parts

You will need :

TOOLS:M1.5 Hex Key (1)M2.0 Hex Key (1)M2.5 Hex Key (1)Cutting Pliers (1)

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Step 1 — Disconnect Heater and Thermistor Cables

This step is optional but we recommend to do it as it makes it easier to assemble the hotend onthe new housing. Unplug the following cables:

Heater Block Cable

Thermistor Cable

Step 2 — Split Main Assembly

Take the main assembly from the upgrade kit box and split it in half.

Remove the shaft assembly from the front housing.

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Step 3 — Prepare Main Shaft Assembly

Parts stripped from the MK2.5S / MK3S: Primary Drive Gear

Perform this step minding the orientation of the Set Screw with the Main Shaft's flat face.

The Primary Drive Gear will be placed on the Main Shaft with the Set Screw aligned with the flatface of the Shaft.

Loosely tighten the Set Screw.

You should be able to move the drive gear up and down but not rotate.

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Step 4 — Assemble The Magnet Lever

Part supplied in the Bondtech upgrade kit: Lever.

Parts stripped from the MK2.5S / MK3S: Short Magnet; Long Magnet; M3x18 Screw.

Insert and press fit the Short Magnet in the Lever;

The magnet must be fully pressed down and secured in the lever.

Insert the M3x18 screw in the screw hole of the Lever.

Mind the orientation of the parts.

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Step 5 — Place The Magnet Lever

The Magnet Lever will be placed here with its screw aligned with the hole.

Perform this step minding the lever orientation:

Tip of the screw to the bottom; screw to the left; magnet to the right.

Screw the Magnet Lever all the way in and then loosen it a bit (half of a turn) so it can rotate freely.

Check if the lever can move back and forward without resistance.

Perform this check properly. Failing to do so will make you come back to this point from furtherway in this installation process.

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Step 6 — Place The Long Magnet

Part stripped from the MK2.5S / MK3S: Long Magnet.

Perform this step minding the magnet orientation.

Insert the Long Magnet in this slot, all the way in.

Use an orientation that repels the Magnet Lever.

If the Magnet Lever is attracted by the Long Magnet, you must invert the Long Magnet's position.

Perform this check properly. Failing to do so will make you come back to this point from furtherway in this installation process.

If the Magnet Lever is repelled, the Long Magnet was inserted with the correct orientation.

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Step 7 — Place The Secondary Drive Gear

Part stripped from the MK2.5S / MK3S. Secondary Drive Gear.

Perform this step minding the drive gear orientation.

The Secondary Drive Gear will be placed in the Hinge with its axis aligned between the slot andthe hole.

Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press theshaft into the slot.

Push the shaft into the back hole until it's flush to both outer faces of the Hinge.

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Step 8 — Adjust Primary Drive Gear

Insert the Shaft Assembly into the Rear Housing.

Ensure the shaft is fully seated inside the bearing.

Alight the groves on the drive gear with the filament path and tighten the setscrew using a 1.5mmAllen key.

Use a piece of filament for guidance if needed.

Step 9 — Prepare Front Housing 1/2

Remove the Shaft Assembly from the Rear and install it in the front.

This step will make it easier to assemble the housing parts later on.

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Step 10 — Prepare Front Housing 2/2

Part supplied in the Bondtech upgrade kit: Square Nut.

The Square Nut will be placed in the marked slot.

Press fit the Square Nut until it flushes to the Housing face.

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Step 11 — Prepare Mosquito Hotend 1/3

Parts supplied in the Bondtech upgrade kit: Mounting Plate.

Parts by Slice Engineering (not in the kit): Mosquito Hotend; 2x M2 screws.

Attach the Mounting Plate on top of the Mosquito Hotend using two M2x10 Screws.

Use an 2mm Allen Key to tighten the screws.

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Step 12 — Install Heater And Thermistor 1/2

The following steps show installation of the heater and thermistor. It is highly recommended to usethermal paste to increase conductivity between the Hotend and Heater/Thermistor.

It is important to use thermal paste that can handle the working temperature of the hotend!

Parts by Slice Engineering (not in the kit); Mosquito Hotend; Boron Nitride Thermal Paste.

Part stripped from the MK2.5S / MK3S: E3D Heater and Thermistor.

Proceed minding the orientation of the Heat Block.

Remove the Screw that will hold the Heater and Thermistor in place using a 2mm Allen Key.

Apply Paste inside the the Hotend and to the Heater and Thermistor.

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Step 13 — Install Heater And Thermistor 2/2

Insert the Thermistor here.

Insert the Heater here.

You can carefully rotate the parts inside the Hotend to spread the paste evenly.

Attach the screw and tighten it using an 2mm Allen Key.

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Step 14 — Install PTFE Tube

Parts supplied in the Bondtech upgrade kit: 18.7mm PTFE tube.

Since the release of the 2nd generation Mosquito hotend (with dark grey heat sink), we started toship 19.7mm PTFE tubes.

If you bought our upgrade kit After April 2020 and the Mosquito before February 2020 (with coppercolor heat sink), cut the PTFE tube down to 18.7mm.

Insert the PTFE tube and push until it's flush with the hotend.

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Step 15 — Install Mosquito Hotend

Proceed minding the orientation of the Heat Block and the Housing.

Mosquito Hotend Assembly.

Alight the Mounting Plate with the groove in the Rear Housing part.

Push on the Mouting plate untill it's fully seated inside the Rear Housing.

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Step 16 — Clamp The Extruder

Check all parts are in place before performing this step.

Perform the clamping minding these alignments:

The Main Shaft's tip must align with the bearing hole inside that rounded hole.

The head of this screw goes into that rounded groove.

The Hinge shaft must align with the matching hole.

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Step 17 — Prepare X-Carriage R2 Front

Part supplied in the Bondtech upgrade kit: 1x Square Nut.

Parts stripped from the MK2.5S / MK3S: 4x Square Nut.

Part we asked you to 3D print: X-Carriage R2 Front.

Perform the following steps:

Identify the 5 Nut Slots.

Insert each Square Nut into a Slot.

Press them in until they flush to the X-Carriage body.

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Step 18 — Prepare Extruder Housing

Parts supplied in the Bondtech upgrade kit: Extruder Housing; 1x Square Nut.

Perform this simple step:

Find the Nut Slot near the Hotend.

Insert the Square Nut inside.

Press it all the way inside.

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Step 19 — Attach X-Carriage Front To Extruder Housing

Parts supplied in the Bondtech upgrade kit: Extruder Housing; 3x M3x40 Screw.

Part we asked you to 3D print: X-Carriage R2 Front.

Perform this step minding the parts and connection holes alignment.

Use a M3x40 Screw to attach here.

Use a M3x40 Screw to attach here.

Use a M3x40 Screw to attach here.

Screw in and tighten to get it well attached.

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Step 20 — Attach Stepper Motor Cable

Parts supplied in the Bondtech upgrade kit: Stepper Motor; Stepper Motor Cable.

Perform this simple step:

Plug the Stepper Motor Cable in the Stepper Motor white socket using the white plug.

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Step 21 — Attach The Axial Fan

Parts supplied in the Bondtech upgrade kit: 4x M3x12 Screw;

Part stripped from the MK2.5S / MK3S: Axial Fan With Cable.

Perform the following steps minding the Axial Fan orientation shown in the pictures:

Guide the Stepper Motor Cable through the groove of the Extruder Housing.

Locate and find the 4 Housing holes to attach the Axial Fan.

Attach the Fan to the Housing using the 4 M3x12 screws.

There are no threads in the holes. The screws must open their own thread. Twist the screwsslowly and firmly but don't over tighten.

Place the fan so the Axial Fan Cable follows this path.

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Step 22 — Clamp Housing Parts

Parts supplied in the Bondtech upgrade kit: M3x35 Screw.

Locate the threaded insert on the bottom of the housing.

Screw the bottom of the front and rear housing together using a 2.5mm Allen Key.

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Step 23 — Attach The Fan Shroud

Parts supplied in the Bondtech upgrade kit: Radial Fan Holder; M3x10 Screw.

Perform the following step minding the orientation of the Fan Shroud against the Housing:

If it helps, pose the Extruder as shown in the picture.

Find the Housing's embedded nut.

Screw the Fan Shroud into place.

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Step 24 — Prepare The Radial Fan Holder

Parts supplied in the Bondtech upgrade kit: Radial Fan Holder; 2x M3 nuts.

Perform the following easy step:

Press fit the Nuts into the Radial Fan Holder.

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Step 25 — Attach The Radial Fan Holder

Parts supplied in the Bondtech upgrade kit: Radial Fan Holder; M3x10 Screw.

Perform the following step minding the orientation of the Holder against the Housing:

If it helps, pose the Extruder as shown in the picture.

Find the Housing's embedded nut.

Screw the Fan Holder into place.

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Step 26 — Attach The Radial Fan

Parts supplied in the Bondtech upgrade kit: 2x M3x20 Screw;

Part stripped from the MK2.5S / MK3S: Radial Fan With Cable.

Perform the following steps minding the orientation of the Radial Fan in relation with the Housing:

Find the Radial Fan Holder embedded nuts and align them with the Fan fixation holes.

Orient the Fan's outtake into the Fan Shroud intake.

Screw the Radial Fan into place.

Route the Fan Cables using the grooves on the side of the Housing.

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Step 27 — Attach The PINDA Probe

Parts supplied in the Bondtech upgrade kit: M3x16 Countersunk Screw.

Part stripped from the MK2.5S / MK3S: PINDA Probe with cable.

Perform the following steps:

Locate the Probe holder in the Housing.

Slide the Probe through the Probe Holder and over about 5mm.

Use the M3x16 Screw to tighten the Probe in the Holder.

Tighten the Probe softly as further on we will have to set its Z-offset.

Route the Probe's cable as show in the picture.

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Step 28 — Place The Filament Sensor Steel Ball

Part supplied in the Bondtech upgrade kit: Steel Ball Holder

Part stripped from the MK2.5S / MK3S: Steel Ball.

Perform the following steps minding the orientation of the triangular appendix in the Holder with thetriangular groove in the Housing' slot:

Place the Steel Ball in the Steel Ball Holder.

Locate the Holder's slot in the Housing.

Press fit the Holder and Steel Ball into place.

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Step 29 — Extruder's Quality Check 1/3

Use 10 to 15 cm of 1,75mm filamentto perform this Quality check.

In the next 2 steps we will show youhow to do the following QualityChecks:

The Magnet Lever test lookingthrough this top window.

The Stell Ball test looking throughthe Hinge window.

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Step 30 — Extruder's Quality Check 2/3

With this test we check if the MagnetLever is functioning properly.

While inserting the filament throughthe filament intake of the extruder,the Magnet Lever should:

Move away when the filamententers.

If the Magnet Lever does not moveaway, main reason is the Leverscrew is to tight. Go back to Step04.

Move back when the filament exits.

If the Magnet Lever doesn't moveback, main reason is the LongMagnet is attracting the ShortMagnet of the Lever. Go back toStep 05.

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Step 31 — Extruder's Quality Check 3/3

With this test we check if the Drive Gears are aligned with the Filament Path.

While inserting the Filament through the intake of the Extruder, the Filament should:

Pass through the Filament Sensor Steel Ball

If the Filament cannot pass the Steel Ball, main reason is the Magnet Lever is blocking the SteelBall because it is in the wrong position and too tight. Go back to Step 04 .

Reach the Primary Drive Gear, while you watch through the Hinge Window, and align with its teethas show in the picture.

The filament is not supposed to push further through.

If the filament is not aligned with the Primary Drive gear teeth, main reason is the clamping of theExtruder was not done properly. Go back to Step 12 .

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Page 33: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 32 — Place Filament Sensor PCB And Cable

Part stripped from the MK2.5S / MK3S: Filament Sensor PCB; Filament Sensor Screw; FilamentSensor Cable.

Perform the following steps:

Put the PCB in place and tighten it with the Screw.

Plug the cable in, using the connection plug to grab the metal terminals of the PCB.

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Page 34: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 33 — Place the Terminal Sensor Cover

Parts supplied in the Bondtech upgrade kit: Filament Sensor Cover; M3x10 Screw;

Perform the following steps:

Put the Cover in place.

Screw it in using the M3x10.

Thanks to Vecko Kojchevski for his idea of securing the sensor cable with the cover. Check out hiswork here:

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Page 35: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 34 — Place The Thumb Screw

Parts supplied in the Bondtech upgrade kit: Thumb Screw;

Perform the following simple steps:

Insert the Thumb Screw into the Hinge hole.

Tighten it all the way in and then release it 2 to 4 full turns.

Depending on the material you are using, the Thumb Screw should be more or less tighten:

2 full turns release for Rigid materials.

4 full turns release for Flexible materials.

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Page 36: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 35 — Attach Extruder To Linear Guides

Part supplied in the Bondtech upgrade kit: 2x Black Zip Tie

Perform the following steps:

Locate in the X-Carriage the holes to guide the Zip Ties.

Inserting and push them through minding the orientation of the lock.

Perform the following step minding the positions of the cables.

Position the extruder on the Print Bed and align both Zip Ties with the sliding block's grooves.

Step 36 — Attach Extruder To Linear Guides

Place the Drive Belt in the bottom horizontal groove of the X-Carriage R2.

Tighten the Zip Ties.

Cut the Zip Ties.

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Page 37: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 37 — Attach The Drive Belt To The Extruder

These grooves in the X-Carriage R2 will hold the Drive Belt in place.

Place one end of the Drive Belt in one X-Carriage's drive belt grooves.

Loosen the X-Axis Stepper motor to give you more room to place the second end of the Drive Belt,as instructed in the Strip Reusable Parts-guide, or check the next step.

Place the other end of the Drive Belt in the other X-Carriage's drive belt groove.

Verify that the belt is fully seated in the slot.

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Page 38: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 38 — Ease and Tighten The Drive Belt

These Screws fix or release the X-axis Stepper Motor.

This screw changes the distance to center of the Stepper Motor.

Proceed like this:

Release the Stepper Motor.

Move the stepper Motor closer to the Extruder to loosen the Drive Belt, before placing both ends ofthe Drive belt in the X-Carriage

Move the stepper Motor away from the Extruder to thighten the Drive Belt, after placing both endsof the Drive belt in the X-Carriage

Check the Drive Belt's tension before fixing it in position.

Tighten the Stepper Motor after finished positioning it.

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Page 39: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 39 — Prepare the X-Carriage Rear

Part stripped from the MK2.5S / MK3S: M3 Nut.

Part we asked you to 3D print: X-Carriage R2 Rear.

Perform the following steps:

This is where the M3 nut will be placed.

Press fit the M3 nut in position.

These cables will cross the X-Carriage Rear in the next step.

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Page 40: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 40 — Cross Cables Through X-Carriage Rear

Cross the following cables through the X-Carriage in this order:

Stepper Motor Cable

PINDA Probe Cable

Radial Fan Cable

Axial Fan Cable

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Page 41: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 41 — Place Main Cable Guide Through X-Carriage

Pass the Main Cable Guide through the X-Carriage Rear.

Insert the tip of the Main Carriage Guide

In the bottom center hole of the X-Carriage Front

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Page 42: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 42 — Attach X-Carriage Rear

Check if all cables plus the Main Cable Guide are crossing through the X-Carriage Rear beforeattaching it.

Check if the Main Cable Guide is properly inserted in its place. Press it forward just to be sure.

Use these 5 M3x10 Screws...

And these 5 holes of the X-Carriage...

To attach it in place.

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Page 43: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 43 — Install Cable Holder

Part stripped from the MK2.5S / MK3S: Cable Holder. M3x40 screw.

And orient its screw to this hole in the X-Carriage Rear.

Then secure the holder in with this screw.

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Page 44: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 44 — Attach Heater And Thermistor Cables

Parts supplied in the Bondtech upgrade kit: 2x Zip Tie.

Locate where to insert the Zip Ties.

Pass the Zip Ties through the hole

Tighten the Zip Ties and cut the remainings.

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Page 45: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 45 — Attach The Main Cable Sleeve 1/3

Parts supplied in the Bondtech upgrade kit: 3x Zip Tie

Part stripped from the MK2.5S / MK3S: Main Cable Sleeve

Perform the following steps:

Roll the Sleeve around the cables

And pass the Zip Ties through the Heater and Thermistor Cable Holder using these 3 holes.

Tighten the Zip Ties.

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Page 46: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 46 — Attach The Main Cable Sleeve 2/3

Cut the Zip Ties tips

Step 47 — Attach The Main Cable Sleeve 3/3

Wrap the Main Cable Sleeve around the cables starting from the fixed tip...

up until there is no more Sleeve to wrap.

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Page 47: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 48 — Plug Cables To Control Box 1/3

Plug for Heater Cable

Plug for Axial Fan Cable

Plug the Heater Cable in.

Plug the Axial Fan Cable

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Page 48: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 49 — Plug Cables To Control Box 2/3

Plug the Radial Fan Cable in.

The Filament Sensor Cable has 3 wires: a Pair (usually Red and Black); and a Single (usuallyWhite).

Plug the Filament Sensor Cable into the bottom Row!

Mind the orientation of the Sensor cable.

Placing the Single wire to the left.

Plug the thermistor Cable in.

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Page 49: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 50 — Plug Cables Into Control Box 3/3

Plug PINDA Probe Cable in.

Plug Stepper Motor Cable in with the black wire on top.

Ensure the orientation of the motor cable is correct otherwise the extruder will turn the wrongdirection!

If the motor is turning in the opposite direction, just reverse the connector.

New Stepper Motor Cables have a dupont connector with lock and can only be inserted oneway, (with the blue wire on top).

Place the Sleeve tip slightly crossing the Main Cable Port.

and route the cable to allow the Control Box to close.

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Page 50: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 51 — Attach Main Cable And Close Control Box

Use the Main Cable Half Ring...

to secure the Main Cable in Place by screwing it to the other Half Ring in the Control Box.

Before closing the Control Box, mind the positioning and rouring of the cables.

Close the Control Box Door

Step 52 — Close Control Box

Fasten the Control Box Door withthis screw on the opposite side ofthe Control Box.

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Page 51: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 53 — Level PINDA Probe 1/2

Lower the Print Head by rotating the lead screws of the Z-axis...

... until the nozzle touches the Build Plate

Step 54 — Level PINDA Probe 2/2

Loosen the PRINDA Probe by releasing pressure on the Holder.

The PINDA PRobe should hoover about 1mm above the Build Plate. To set this distance use oneZip Tie laying down in the Build Plate.

Let the PINDA Probe slide down until it reaches the Zip Tie.

After the Probe is in position, tighten the Holder back on by fastening the screw.

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Page 52: 02. Prusa i3 MK2.5S / MK3S - Mosquito Upgrade Kit ... · Lay down the Gear's shaft in the slot with the gear large teeth on the side of the slot and press the shaft into the slot.

Step 55 — Attach "Powered By Bondtech" Sticker

Part supplied in the Bondtech upgrade kit: Powered By Bondtech Sticker

If you like, place the sticker on your MK2.5S / MK3S at a place of your choosing.

Step 56 — Firmware Update

To complete the installation youneed to flash our updated firmwareonto your printer. You can find ourguide here: Firmware Update

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