Customer Service - Support Center for Bondtech Customers and Users

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YES to:

increase printing reliability;
improve surface quality;
enable more materials;
print faster.

.

YES if:

you have the needed technical skills;
you can make the investment.

NO if:

current reliability is acceptable;
current surface quality is enough;
current materials are enough;
current print speed is OK.

.

NO if:

you don’t have the technical skills;
you’ll struggle after making the investment.

Here is some more detailed information on our 3D printer upgrades

Bondtech designs, manufactures and sells feeders (units that feed filament to the print head) and upgrade kits (sets that improve the filament feeding and material extrusion) that users, makers and manufacturers use to improve their printers. Our products allow you to print better, faster and with unparalleled success rate. Bondtech represents reliability and performance.

Installing our hardware brings many advantages, but also comes with some costs. Deciding on adding our upgrades or not, is a personal choice that depends on personal circumstances. Think about where you stand presently, and what you want to achieve. Then ask yourself if you are willing to go through the Cons to get all the Pros.

Upgrading your 3D printer with Bondtech

Pros:

  • Additional push force with lower filament tearing and deformation;
    • more reliable extrusion;
    • ability to print faster.
  • Increased resolution up to 492 steps per mm;
    • more precise extrusion;
    • improves print quality.
  • Smaller form factor with less moving weight;
    • more flexible to install;
    • reduced vibration that allow for better part quality.
  • High quality parts and build;
  • The printer gains in value and the filament drops in cost (less fails make it cheaper).

Cons:

  • There is a premium to pay for our products;
    • High quality has a cost;
    • some original parts are replaced and discarded.
  • It requires more know-how and technical expertise;
    • to disassemble the original feeding/extrusion system;
    • to install the Bondtech hardware;
    • to make the necessary firmware adjustments.
  • Adding or replacing hardware requires firmware adjustments.
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Filament Size
1.75mm
2.85mm (or 3.00mm)

Setup Type
Direct Drive
Bowden

Upgrade Type
Drive Gears
Standalone Extruders
Upgrade Kits

About Filament sizes

When considering to upgrade your 3D printer with Bondtech technology, be aware that we have solutions to extrude filament of the following diameters:

  • 1.75mm;
  • 2.85mm;
  • or 3.00mm thickness.

Bondtech products are not suitable to use with 3D printers that use other kinds of raw materials like thicker filament, pastes, pellets, rods, powder, or resins.

About setup types

There are two main types of extrusion systems that depend on how the extruder is mounted on your 3D printer. Bondtech provides solutions to be used with both.

Bowden systems have the extruder on a fixed position, usually attached to the chassis of the printer, and the filament is pulled from the spool and pushed through a tube (bowden tube) down to the print head, where it is extruded.

Thicker filaments are most commonly used with Bowden. Because it requires more push force, due to the friction inside the tube, it usually uses stronger motors. There are some limits regarding too abrasive materials, as they can damage the interior of the bowden tube. The weight of the extruder and stepper is not a problem, because it does not taxes the print head movement.

Direct Drive systems have the extruder attached to the hotend on a moving position

This type is most commonly used with thinner or flexible filaments. Light stepper motors are used to lower the weight load on the axial movement.

About upgrade types

Our company is specialized on providing extrusion upgrade technology. We supply multiple OEMs, that manufacture 3d printers with wide world recognized brands; many more Makers, that create and manufacture their own 3D printers; and even more consumers and companies that want to upgrade the reliability and performance of their of-the-shelf 3D printers.

Dual Drive Gears are the core component of our extrusion technology. They embrace the filament from two opposite sides and push it through the filament path. The Bondtech Dual Drive gears do this without grinding, slipping, or changing the shape of the filament.

Standalone Extruders are our standard units (eg. BMG, QR, DDG, …) that can be used in both setups, and are not brand or model dependent. They can be adapted to many printers in many different ways.

Upgrade Kits are sets of components aimed to upgrade a specific 3D printer model or 3d printer type. The upgrade kits include extruders and mounting parts, and may include additional components like hotends, cables, or others.

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Compatibility Table

BCN3D
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  BCN3D Sigma R16
BCN3D Sigma R17
EXT-SIGMA-3.0 includes QR 492.45 2.85mm Bowden
Creality
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Creality Ender 3
Creality Ender 3 Pro
Creality CR-10
Creality CR-10S
Creality CR-10 S4
Creality CR-10 S5
Creality CR-10S Pro
Creality CR-10 V2
EXT-KIT-48 includes BMG 415 1.75mm Bowden
  Creality Cr-10S
Creality CR-10 S4
Creality CR-10 S5
EXT-KIT-49 includes BMG 415 1.75mm Bowden
  Creality Ender 3
Creality Ender 3 Pro
Creality CR-10
Creality CR-10S
Creality CR-10 S4
Creality CR-10 S5
Creality CR-10S Pro
Creality CR-10 V2
EXT-KIT-50 includes BMG 415 1.75mm Bowden
  Creality Cr-10S
Creality CR-10 S4
Creality CR-10 S5
EXT-KIT-66 BMG type 415 1.75mm Direct Drive
  Creality CR-10S Pro EXT-KIT-72 includes BMG 415 1.75mm Bowden
  Creality CR-10 V2 EXT-KIT-75 includes BMG 415 1.75mm Bowden
Flashforge
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Flashforge Creator Pro 2016 EXT-MKB-5 custom 140 1.75mm Direct Drive
Makerbot
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Makerbot Replicator 2x EXT-MKB-1 custom 140 1.75mm Direct Drive
  Makerbot Replicator 2 EXT-MKB-4 custom 140 1.75mm Direct Drive
Prusa
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Prusa i3 MK2
Prusa i3 MK2S
EXT-KIT-62 BMG type 415 1.75mm Direct Drive
  Prusa i3 MK2.5
Prusa i3 MK3
EXT-KIT-63 BMG type 415 1.75mm Direct Drive
  Prusa i3 MK2.5S
Prusa i3 MK3S
EXT-KIT-68 BMG type 415 1.75mm Direct Drive
  Prusa i3 MK2.5S
Prusa i3 MK3S
EXT-KIT-69 BMG type 415 1.75mm Direct Drive
Raise3D
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Raise3D N1
Raise3D N2
Raise3D N2+
EXT-KIT-38 includes DualDirect 415 1.75mm Direct Drive
  Raise3D N1
Raise3D N2
Raise3D N2+
EXT-KIT-53 includes SingleDirect 415 1.75mm Direct Drive
Tevo
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Tevo Tornado EXT-KIT-48 includes BMG 415 1.75mm Bowden
  Tevo Tornado EXT-KIT-50 includes BMG 415 1.75mm Bowden
Ultimaker
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Ultimaker 2 Go
Ultimaker 2

Ultimaker 2 Extended

Ultimaker 2+

Ultimaker 2 Extended +

EXT_UM2 includes QR 492.45 2.85mm Bowden
  Ultimaker 3
Ultimaker 3 Extended
EXT_UM3 includes QR 492.45 2.85mm Bowden
  Ultimaker 2+
Ultimaker 2 Extended
EXT-KIT-41 includes DDG 311 2.85mm Bowden
  Ultimaker 3
Ultimaker 3 Extended
EXT-KIT-43 includes DDG 311 2.85mm Bowden
Wanhao
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Wanhao i3 EXT-KIT-24 140 1.75mm Direct Drive
  Wanhao Duplicator 6
Monoprice Duplicator 6
EXT-KIT-39 BMG type 415 1.75mm Direct Drive
  Wanhao D9 EXT-KIT-59 BMG type 415 1.75mm Direct Drive
Zaribo
> Model Upgrade Kit Base E-steps Filament ⦰ Type
  Zaribo 220 MK2
Zaribo 320 MK2
EXT-KIT-62 BMG type 415 1.75mm Direct Drive
  Zaribo 220 MK2.5
Zaribo 320 MK2.5
EXT-KIT-63 BMG type 415 1.75mm Direct Drive
  Zaribo 220 MK2.5
Zaribo 320 MK2.5
Zaribo 220 MK3
Zaribo 320 MK3
EXT-KIT-68 BMG type 415 1.75mm Direct Drive
  Zaribo 220 MK3S
Zaribo 320 MK3S
Zaribo 420 MK3S
EXT-KIT-69 BMG type 415 1.75mm Direct Drive

We cannot guarantee that our Bondtech Upgrade Kits can be used on models not included in this list.

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This is a form for Bondtech visitors and customers.
Please supply accurate information to ensure our support is performed in an expedite way.
Incorrect info, or not related with products or features of our website, may render the form unprocessable.
Thank you.


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    This is a form for Bondtech.se online shop customers only.
    Please supply accurate information to ensure our support is performed in an expedite way.
    Incorrect info, or not related with an order placed in our website, may render the form unprocessable.

    Not for Technical Support cases

    For defective or damaged products and parts use the “Ask for Technical Support” form.
    Thank you.


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      Links to PDF and Step By Step Guides

      BCN3D
      > Model Upgrade
      Kit
      Stripping
      Down
      Bondtech
      Installation
      Firmware
      Update
      Current
      Adjustment
        BCN3D Sigma EXT-SIGMA-3.0 Yes -> Yes <- Yes No
      Creality
      > Model Upgrade
      Kit
      Stripping
      Down
      Bondtech
      Installation
      Firmware
      Update
      Current
      Adjustment
        Creality Ender 3
      Creality Ender 3 Pro
      Creality CR-10
      Creality Cr-10S
      Creality CR-10 S4
      Creality CR-10 S5
      Creality CR-10S Pro
      Creality CR-10 V2
      EXT-KIT-48 Yes -> Yes Yes Yes
        Creality Cr-10S
      Creality CR-10 S4
      Creality CR-10 S5
      EXT-KIT-49 Yes -> Yes Yes Yes
        Creality Ender 3
      Creality Ender 3 Pro
      Creality CR-10
      Creality Cr-10S
      Creality CR-10 S4
      Creality CR-10 S5
      Creality CR-10 V2
      EXT-KIT-50 Yes -> Yes Yes Yes
        Creality CR-10S Pro EXT-KIT-50 Yes -> Yes Yes Yes
        Creality Cr-10S
      Creality CR-10 S4
      Creality CR-10 S5
      EXT-KIT-66 gen I Yes Yes Yes Yes
        Creality Cr-10S
      Creality CR-10 S4
      Creality CR-10 S5
      EXT-KIT-66 gen II Yes Yes Yes Yes
        Creality Cr-10S Pro EXT-KIT-72 Yes -> Yes Yes Yes
        Creality Cr-10 V2 EXT-KIT-75 Yes -> Yes <- Yes Yes
      Flashforge
      > Model Upgrade
      Kit
      Stripping
      Down
      Bondtech
      Installation
      Firmware
      Update
      Current
      Adjustment
        Flashforge Creator Pro 2016 EXT-MKB-5 Yes -> Yes <- Yes <- Yes
      Prusa
      > Model Upgrade
      Kit
      Stripping
      Down
      Bondtech
      Installation
      Firmware
      Update
      Current
      Adjustment
        Prusa i3 MK2
      Prusa i3 MK2S
      EXT-KIT-62 Yes -> Yes <- Yes No
        Prusa i3 MK2.5
      Prusa i3 MK3
      EXT-KIT-63 Yes Yes <- Yes No
        Prusa i3 MK2.5S
      Prusa i3 MK3S
      EXT-KIT-68 Yes Yes Yes No
        Prusa i3 MK2.5S
      Prusa i3 MK3S
      EXT-KIT-69 Yes Yes Yes No
      Raise3D
      > Model Upgrade
      Kit
      Stripping
      Down
      Bondtech
      Installation
      Firmware
      Update
      Current
      Adjustment
        Raise3D N1
      Raise3D N2
      Raise3D N2+
      EXT-KIT-38 Yes -> Yes <- Yes <- Yes
        Raise3D N1
      Raise3D N2
      Raise3D N2+
      EXT-KIT-53 Yes -> Yes <- Yes <- Yes
      Tevo
      > Model Upgrade
      Kit
      Stripping
      Down
      Bondtech
      Installation
      Firmware
      Update
      Current
      Adjustment
        Tevo Tornado EXT-KIT-48 Yes -> Yes Yes Yes
        Tevo Tornado EXT-KIT-50 Yes -> Yes Yes Yes
      Ultimaker
      > Model Upgrade
      Kit
      Stripping
      Down
      Bondtech
      Installation
      Firmware
      Update
      Current
      Adjustment
        Ultimaker 2 Go
      Ultimaker 2

      Ultimaker 2 Extended
      Ultimaker 2+
      Ultimaker 2 Extended +

      EXT_UM2 Yes -> Yes <- Yes No
        Ultimaker 3
      Ultimaker 3 Extended
      EXT_UM3 Yes -> Yes Yes No
        Ultimaker 2+
      Ultimaker 2 Extended +
      EXT-DDG Yes -> Yes <- Yes No
        Ultimaker 3
      Ultimaker 3 Extended
      EXT-DDG Yes -> Yes Yes No
      Wanhao
      > Model Upgrade
      Kit
      Stripping
      Down
      Bondtech
      Installation
      Firmware
      Update
      Current
      Adjustment
        Wanhao i3 EXT-KIT-24 Yes -> Yes <- Yes No
        Wanhao Duplicator 6
      Monoprice Duplicator 6
      EXT-KIT-39 Yes -> Yes Yes No
        Wanhao D9 / bob V1.5
      Wanhao D9 / bob V1.7
      EXT-KIT-59 Yes -> Yes <- Yes No
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      We’ll be glad to share it for you. Fill in the form below and if your piece is selected, everyone in our community will know about it. Every week we will select one project to post on our website and share it through Facebook, Instagram and Twitter. Make it amazing!



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        You can also recommend Bondtech by sending us a message using our Contact Form below.

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          What Best Describes Your Problem?

          The extruder's stepper motor turns in the wrong direction

          There are two ways of solving this issue:

          1. Reconnect wires
            Reverse two of the 4 wires connected to the stepper motor;
          2. Revert direction in firmware
            Use the firmware to revert the direction of rotation.

          See why this happens, and how to solve it here:
          Troubleshooting Extruder

          The extruder's stepper motor vibrates and doesn't rotate

          There are 3 main possible causes for this issue to happen:

          • Broken wires
            One or more wires connected to the stepper motor are broken;
          • Wrong wire connection
            One or more wires connected to the stepper motor are using the wrong pin.
          • Connector not properly seated
            The connector on the mainboard or on the stepper motor may be loose. It may also happen if one of the pins in a connector has moved or been pushed out.

          Check the stepper motor cables and perform any corrective measure required.

          The extruder's stepper motor is clicking and losing steps

          There are many possible causes for this issue to happen:

          • Hotend is jammed
            Filament cannot pass through the hotend. Most probable cause is heat from the heat block creeped up the hotend causing the material to soften, expand and stick to heat break walls.

            Use the proper working temperature and check if the cooling fans are working, and add more cooling if required.

            Check if the fans or heat sinks are covered with dust and clean them if they do.

            If possible use thermal paste between the heat break and the heat sink to ensure a proper dissipation of heat.

          • Filament is blocked
            The filament hits the edge of the PTFE tube and gets blocked. It may also happen the PTFE tube is not properly pushed against the heat break (or nozzle) and a clog forms between them.

            Check the filament tube is in proper condition and has the right length.

            Clear any clog or jam and re-install the PTFE tube by firmly pushing it against the heat break (or nozzle).

          • Filament is stuck
            The filament diameter is too large here and there, and gets stuck when is thicker than the filament path. Or, on unloading the filament tip is too thick.

            Disassemble and push out the stuck filament.
            Always extrude about 20 mm of filament before unloading.

          • Clogged nozzle
            A possible explanations for this to happen is that due to wrong temperature settings for the material being used, there was not enough flow to allow the current print speed and the pressure build-up created a blockage inside the hotend.

            Clear the clog or replace the nozzle.

          • Too much extrusion required
            The hotend cannot melt all the plastic being pushed.

            Reduce the print speed/layer height/extrusion width to lower the amount of plastic being pushed.

          • Nozzle too close to the print bed
            The nozzle is being obstructed by the print bed and plastic cannot flow.

            Increase Z-offset.

          Extruder is under-extruding

          These are the main causes for this to happen:

          • E-steps is not properly set.
            Was the firmware updated?
            E-steps can be set using the recommended firmware upgrade, G-Code commands; or using machine settings. >>Check this guide
          • Secondary drive gear is loose
            Was the thumbscrew tightened according to recommendations?
            The hinge holding the secondary drive gear may be loose, causing the filament to slip. Try tighten it using the thumbscrew. >> Check this guide
          • Filament is not well calibrated (less frequent)
            The filament thinner than advertised or is not calibrated and its thickness varies while being extruded. This causes unexpected changes in the volume of extruded plastic.

            Do a calibration procedure and adjust your flow or extrusion multiplier to improve your prints.

          • Wrong filament setting in slicer
            The filament diameter setting in the slicer is thicker than the filament actually being used.

            Correct the setting to match the filament diameter.

          • Partially clogged nozzle
            The nozzle is semi obstructed and constrains the flow of material.

            Change or clean the nozzle.

          Bowden tube was pushed out

          There are two main possible causes for this issue to happen, both related to an interruption of the filament flow inside the hotend:

          • Clogged Hotend
            The hotend gets clogged and the extruder keeps pushing material causing a growing increase of back pressure that snaps the bowden out of the push-fit.;
          • Heat creep jam
            Similar result can be also be due to a jam inside the hotend created by heat-creep.
            Heat-creep is caused by heat flowing up through the heat-break. This softens the filament and disturbs the extrusion process because material is melting and flooding the interior of the heat-break instead of pushing material out of the nozzle. To avoid the heat-creep check the hotend cooling fan is working, and take the preventive measure of unloading the material after finishing printing.

          In both cases, clear the clog or jam and then reattach the bowden to the push-fit so you can print again.

          As our extruder can generate very high feeding force, to avoid pushing out the bowden when theissues described above occur, we recommend lowering the current of the stepper motor so that it will lose steps before the bowden tube is pushed out.

          Filament is stuck inside the extruder

          Due to small differences in thickness between sections of the filament path inside the hotends, and the fact that molten plastic is shaped to the extrusion channel, it can occur that filament gets stuck in thinner sections when unloading.

          Disassemble and push out the stuck filament.

          It is a good practice to always extrude some material (about 20 mm) before unloading the filament. This procedure will soften the blocking tip that will be able to be pushed back during unloading.

          Stepper motor is too hot

          If the extrusion stepper motor is getting too hot, this means the electrical current being fed to the motor is too high. Lower the current step by step until you reach a good compromise between torque and temperature.

          If you are using one of our stepper motors consider the following current limits:

          Check the User Guide of your printer on how to adjust the current. You can also search inside this tab if there are guides available to your Bondtech Upgrade Kit that may have info on Current Adjustment

          Filament is slipping and is not properly fed

          This issue can be identified on sight or by evident signs of under extrusion. There are two main causes for the filament to slip inside the extruder:

          1. Loosen thumbscrew (more frequent)
            The hinge assembly is not tighten and the secondary drive gear cannot make enough pressure on the filament to push it.

            Use the thumbscrew to properly tighten the filament as indicated here

          2. Missing ball bearing (less frequent)
            A ball bearing may be missing on either side of the main shaft assembly. This will cause the main shaft to wobble and the primary gear will not make enough pressure on the filament to push it.
            This may happen when a user opens the extruder housing and without notice the bearing may fall and get lost.

            You will need to buy a ball bearing replacement

          My PRUSA is under-extruding or extruding slowly after upgrade

          This issue may occur even if the Prusa is updated with our Bondtech firmware.
          The most common cause for this to happen is by missing the last step of the guide.

          1. Factory Reset
            When we update the firmware we change the microstepping from 32 to 16 bit. We do this because the increase of resolution of our extruder, if working at 32bit, would require the E-steps to be set at 830. It’s too many steps to be generated by the 8 bit processor in the mainboard. That change in microstepping requires a Factory Reset.

            Perform a Factory Reset in your Prusa (after updating the Prusa with our firmware).

          Z-calibration fails in PRUSA

          This issue will occur if the firmware was not updated.

          1. Firmware update
            Because our Upgrade Kits for Prusa change the z position of the tip of the nozzle, there is a need to correct that setting.

            Verify here what is the version you should use on your setup, download the file and find here a guide for your printer to perform the firmware update.

          My DDS is grinding the filament and the motor is getting too hot

          This issue may occur if the default Retraction Settings are kept after install.
          The CR-10S has a 5mm retraction distance and 45mm/s retraction speed default. This works well on a Bowden setup.
          When changing to Direct Drive the same setting should be much lower and slower.

          1. Lower Retraction Distance and Speed
            On Direct drive systems the extruder sits very close to the nozzle and it requires much less effort on retractions. Fine tune the values below to your preference.

            Change Retraction Distance to 1mm and Retraction Speed to 35mm/s.

          Filament stops extruding during print

          There are many causes for this issue to happen. Here are some of the most frequent:

          1. Heat Creep
            Due to heat creep the material slowly melted and expanded inside the heat break up until it became a heat insulator, solidified and created a jam.

            Clear the jam and verify if your hotend cooling fan is working properly.

          2. Clogged nozzle
            A possible explanations for this to happen is that due to wrong temperature settings for the material being used, there was not enough flow to allow the current print speed and the pressure build-up created a blockage inside the hotend.

            Clear the clog or replace the nozzle.

          3. Stepper motor stops
            Stepper motor are very resilient and rarely stop working. The most probable cause is a shut down of data or power.

            Check the wires and connectors to the stepper motor.

          My hotend is leaking

          The most probable cause of a leaking hotend is the nozzle is not properly tighten.

          1. Nozzle not properly tighten
            Under pressure the molten material will follow the path of less resistance. Sometimes happens that path is between the heat break and the nozzle because they are not well tighten together.

            Properly tighten your nozzle by following these instructions.

          My POM main gear is worn out

          The most probable cause of a worn main gear is the wrong assembly of the motor gear.

          1. Correct motor gear position
            There is a proper orientation and distance to be set while attaching the motor gear to the motor shaft with the set-screw. Check your Upgrade Kit Step By Step Guide to learn how it’s done.

            Disassemble your Upgrade Kit and follow the Guide instructions to properly set the motor gear in place.

          The incorrect assembly of the motor gear can also have the following adverse effects: under-extrusion; noise; feeding failure.

          Homing fails on my CR-10 S4 or S5

          When Homing fails the CR-10S, S4 or S5 will show the following error message:
          Homing Failed; PRINTER HALTED; Please reset.

          With implementation of Marlin 1.1.9, some CR-10S users experience problems when trying to home the printer. This is most likely due the new more sensitive way Marlin handles the signals. Most printer manufacturers use mechanical switches with a capacitor to filter the noise from the signal. Unfortunately Creality does not. Which means if your signal suffers from noise you might have this problem.


          Mechanical solutions to solve this issue:

          1. If you are using an extension cable on your Z switch, remove it and check if it makes a difference.
          2. Separate the Z-switch cable from the bundle of other cables, they may disturb the signal.
          3. Twist the cables.
          4. ADVANCED: Solder a 100nF capacitor in parallel with the switch. This would make the signal “noise-proof” without sacrificing accuracy, but we do not recommend this option unless you have experience with electronics and soldering. This is not guaranteed to work!


          Enabling Noise filtering in Marlin could possibly solve this issue but at the cost of accuracy.

          We have compiled a firmware with Noise filtering enabled. We only use 2 iterations so this should be similar to the accuracy of Creality’s stock 1.1.6 firmware.

          You can download the firmware below.


          If the mentioned solutions do not work, unfortunately you might not be able to use Marlin 1.1.9 in its current state.

          We have compiled a Bondtech specific firmware based on the original firmware Creality is providing with the printers (Marlin 1.1.6)

          You can find the firmware below.

          If all the above didn’t helped you solve the problem,
          send us a message using our
          “Technical Support Request” form

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          What Best Describes Your Problem?

          My extruder is blocked and PTFE tube doesn't come out

          In order to disconnect the PTFE tube, the black ring of the push-fit needs to be pressed down. If it’s not possible to press it down, most likely there has been a build up of filament that blocks the black piece from being pressed.

          The reason for why the filament has built up is that the PTFE tube has not been pushed all the way into the housing. If it is not pressed in all the way, there is a free space between tube and nozzle, where the filament can jam, because the extruder has a super strong grip on the material. This can also happen if you have a clogged hotend.

          The easiest way to solve the issue is:

          1. use a scalpel to cut the tube flush to the top of the black push-fit collar;
          2. use the same scalpel to cut the tube from the center and outwards so you split it in two pieces;
          3. remove the PTFE tube from inside to allow the removal of the jammed filament that is below the coupler.
          My push-fit collar broke after a jamm


          When a jam occur, the Bondtech extruder keeps on pushing filament and may happen that the pressure build-up inside the hotend is enough to pop the bowden tube out of the push-fit.

          The push-fit collar replacement is easy to do. You just need to buy a replacement.

          • You can buy a collar replacement at our webshop, or in a Bondtech Sales Partner near you. This is a very common and affordable component that can be purchased from many other vendors as well. Choose the one closer to you to lower the shipping costs.

          Here is a more detailed explanation on the causes

          The Bondtech extruders multiply the torque of the stepper motors 3 fold or more, depending on the extruder. This creates a very powerful extrusion system that provides very high pressure, and that’s why it works so well : )

          When the nozzle is clogged there is no place for the filament to escape, and since the extruder continues to feed, the force will be high enough to push the tube out and create space for the filament to jam up.

          We recommend to use our 25 mm stepper motor that has 18 Ncm of torque that gives the extruding force needed.

          When using original stepper motors with torque up to 40 Ncm and more, the extruder will be too strong, due to the 3:1 gearing ratio. In order to avoid having problems when a clog is formed, the best way is to reduce the current to the stepper motor so it will loose steps, before the force gets too high, and cause no damages

          My extruder is blocked with material inside

          Sometimes the extruders can get jammed when filament gets stuck inside and cannot be easily removed. Melted material can be deposited in hard to access areas of the extruder housing.

          Here is how to solve this issue without damaging the extruder:

          • remove the housing from your printer so you will be able to push it out from the bottom;
          • if you still can’t get it out, please contact support using our “Technical Support Request” form.
          My DDS heater cartridge cable broke

          There are two ways of solving this issue depending on what DDS for CR-10S generation you have:

          1. On DDS Gen I
            The heater cartridge has a long lead that goes from the cartridge to the controller box.

            To perform this repair, please follow this step by step guide.

          2. On DDS Gen II
            The heater cartridge has a short lead and connector that is much easier to replace.

            Remove the extruder from the printer;
            Take out the connector cover on the back;
            Replace the heater cartridge;
            Re-attach the DDS to the printer.

          The ECAS push-fit can't hold the bowden tube

          If you are experiencing problems with your ECAS PTFE-tube Push-fit Connector, please go through the steps listed below.

          1. Check Metal pins
            Check that all the 10 metal pins that grab the tube are whole and look ok. See picture for clarification.
            You may need to use a flashlight in a certain angle to see them correctly.
            If All pins are OK, go to step 2.
            If the metal pins are missing or damaged, go to step 3.
          2. Check bowden tube
            If your push-fit is fine and should work then the problem most likely comes from the tube. You need to make sure your tube is whole and not damaged. Try change the tube to a new.
          3. Replace push-fit
            If the connector is damaged and needs to be replaced follow one of the solutions presented below.

          We have 3 solutions available for you to choose from:

          • (Do it yourself) Replace the push-fit with a new ECAS, there is a guide further below in the webshop page on how to replace it.
          • (Do it yourself) Replace it with the threaded Metal push-fit connector. You will need to drill the push-fit hole with a 8.4mm drill and thread it with a G1/8” tap, to make it fit.
          • Use our Customer Service > Contact Forms > Technical Support Requests to ask for a replacement of the front housing part (part cost is $16 USD) and a threaded metal push-fit (part cost $2.63USD).

          Known reasons for Push-fit Connector failure:

          Too much back-pressure from the Nozzle, it can occur from:

          1. Heat-creep, hotend doesn’t cools enough from fan or other cooling source.
          2. Clogged nozzle, plastics in nozzle that caused a stop, see THIS LINK how to fix a clogged nozzle.
          3. Too low hotend temperature, the plastic can’t melt fast enough. Possible solution: Raise your nozzle temperature 5-15 degree Celsius.
          4. The nozzle is too close to the print surface and prevents plastic from coming out. Possible Solution:Level the bed properly.
          5. The plastic can’t be pushed through the nozzle fast enough, maximum flow is exceeded. Possible Solution: print slower or raise temperature on nozzle 5-15 degree Celsius.

          To avoid damage your push-fit again, lower the stepper motor Current on your 3D printer.
          The stepper motor will lose steps before the back-pressure from the hotend gets too high.

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          This is a form for Bondtech users to request technical support.
          Accurate information will ensure the support process is performed in an expedite way. In case of Under Warranty support requests we may ask you later for proof of purchase.
          Thank you.