¶ Hotend
The hotend is installed on the toolhead and is used for extruding filament. For the H2D printer, we provide hotend with diameters of 0.2, 0.4, 0.6, and 0.8mm, allowing you to choose according to your needs. Additionally, we offer a high flow hotend for your selection.
Note: If you have replaced the nozzle with one of a different specification, please remember to sync the nozzle information on the device.
¶ When to use
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Hotend clogging
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Hotend damage
¶ Tools and materials needed
- New hotend
¶ Safety Warning
IMPORTANT!
It's crucial to power off the printer before conducting any maintenance work, including work on the printer's electronics and tool head wires. Performing tasks with the printer on can result in a short circuit, leading to electronic damage and safety hazards.
During maintenance or troubleshooting, you may need to disassemble parts, including the hotend. This exposes wires and electrical components that could short circuit if they contact each other, other metal, or electronic components while the printer is still on. This can result in damage to the printer's electronics and additional issues.
Therefore, it's crucial to turn off the printer and disconnect it from the power source before conducting any maintenance. This prevents short circuits or damage to the printer's electronics, ensuring safe and effective maintenance. For any concerns or questions about following this guide, we recommend submitting a technical ticket regarding your issue and we will do our best to respond promptly and provide the assistance you need.
¶ Bambu Studio Software Settings Notice
In the latest version of Bambu Studio (Bambu_Studio_win_public-v02.01.01.52-20250616155614), the option to modify nozzle information under the "Printer Parts" section has been disabled (as shown in the screenshot below) and is now for display purposes only.
Some users may mistakenly consider this a software or hardware issue due to changes from previous versions. However, this adjustment is intended to enhance operational consistency and user safety. Nozzle changes must be performed directly on the printer. Allowing modifications via the software interface could mislead new users into thinking that a physical nozzle replacement is unnecessary before printing.
¶ Remove the Hotend
¶ Step 1：Lower the heatbed
Lower the heatbed on the screen and ensure that the hotend is at room temperature, then power off the printer.
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¶ Step 2: Remove the toolhead front cover and PTFE tube
Pinch the top of the toolhead front cover and lift the toolhead front cover upward.
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Press the black outer ring to unlock the two connectors above the extruder to remove the PTFE tube.
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¶ Step 3: Remove the hotends
The H2D printer has two hotends, left and right, which you can replace as needed.
Always check the current temperature of the hotend before replacing it to avoid burns due to high temperatures!
The flow blocker is located on the lifting rod. By moving the rod, the flow blocker will move left and right. If you need to remove a hotend and the flow blocker is blocking the hotend, you must first move the flow blocker connecting rod to move the flow blocker away before removing it to prevent the flow blocker from being accidentally bent when removing the hotend. When moving, the flow blocker may not be moved into place at once due to the tilt limit of the connecting rod. At this time, you need to make a rough move and then make a fine adjustment to ensure that the flow blocker is completely in place.
Remove the silicone sock for hotend that is not blocked by the flow blocker, unlock the buckle to remove the hotend, and pre-fasten the buckle of the heating assembly.
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Move the flow blocker connecting rod to move the flow blocker to the other side, remove the silicone sock of the remaining hotend, unlock the buckle to remove the hotend, and pre-fasten the buckle of the heating assembly.
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¶ Install the Hotend
As with the disassembly operation, if you need to install a hotend and the flow blocker is blocking the hotend, you need to move the flow blocker connecting rod to remove the flow blocker before installing it to prevent the flow blocker from being accidentally bent when installing the hotend. When moving, the flow blocker may not be moved into place at once due to the tilt limit of the connecting rod. You need to move the connecting rod again to ensure that the magnet at the end of the connecting rod is attached to the magnet bracket to ensure that the flow blocker is fully in place.
Install the right nozzle, lock the nozzle buckle and put on the silicone sock for hotend.
Check Nozzle Installation
- Press the nozzle downward before locking the clip, ensuring proper engagement.
 Example of hotend clip not being secured correctly |
 Example of hotend clip being secured correctly |
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Move the flow blocker connecting rod to move the flow blocker to the other side, and then install the left nozzle. Tighten the nozzle clip and put on the silicone sock for hotend.
Please note that when installing the left silicone sock for hotend, it is necessary to ensure that the silicone sock for hotend cannot be tilted to avoid deformation of the windshield next to it.
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When replacing the toolhead front cover, you can first snap it into place under the extruder, then push it back to install the front cover in place.
¶ Sync Nozzle Information on the Device
If you have replaced the hotend with one of a different diameter or material, please refer to the animation below to update the nozzle information on the screen:
¶ Verify the Functionality
Ensure the hotend is securely installed and can extrude filament normally.
¶ End Notes
We hope the detailed guide provided has been helpful and informative.
If this guide does not solve your problem, please submit a technical ticket, we will answer your questions and provide assistance.
If you have any suggestions or feedback on this Wiki, please leave a message in the comment area. Thank you for your support and attention!