¶ Issue Description
The filament is loaded but cannot be extruded (for example, the yellow filament in the image below), resulting in a partially missing model or no model at all.
¶ Possible Causes
Extruder clog / Hotend clog:
¶ Troubleshooting Steps
After entering the toolhead, the filament first passes through the extruder, then enters the hotend, and is finally extruded from the nozzle.
Therefore, you only need to confirm whether the filament can pass through the extruder in order to determine where the clog is.
¶ 1. Extrusion Test
(1) Refer to the Automatic Filament Unloading Guide to unload the filament from the problematic toolhead (for example, Toolhead 1), and wait until the toolhead temperature drops below 40°C.
(2) Insert a hex key into the hole on the side of the toolhead, then press the key again to separate the toolhead from the swapper.
(3) Use H2.0 hex key to remove the hotend screws and move the hotend aside (do not disconnect related cables).
(4) Enter the machine's IP address in a browser to access Fluidd.
The built-in filament extrusion function on the screen requires the toolhead to be picked up, so here we use Fluidd to control extrusion instead.
(5) Extruder in Fluidd actually refers to the toolhead. In the two locations shown in the image, Extruder, Extruder1, Extruder2, and Extruder3 correspond to Toolheads 1, 2, 3, and 4 respectively.
(6) Taking Toolhead 1 as an example, select Extruder in the lower-left corner of the page, and set the Extruder temperature to 180°C in the upper-right corner.
(7) Set the extrusion distance to 200 mm, click Extrude, insert a length of filament into the extruder, and observe whether the filament is extruded normally.
Yes: Hotend Clog
N0: Extruder Clog
¶ 2. Hotend Clog
(1) Based on the filament previously used in the problematic toolhead, heat the nozzle to that filament's recommended printing temperature — for example, 230°C for PLA.
(2) Insert the cleaning needle into the hotend through the nozzle and push it up and down several times to clear the blockage. Be sure to wear heat-resistant gloves.
Please note: the cleaning needle included with the machine is approximately 0.3 mm in diameter, so this method is not suitable for 0.2 mm hotend.
(3) Reinstall the hot end and refer to the Cold Pull Guide to perform a cold pull.
A cold pull is also recommended before loading a different filament into the same toolhead.
¶ 3. Extruder Clog
(1) Refer to the Toolhead Disassembly and Reassembly Guide to disassemble the extruder.
(2) Complete the following checks:
1. Is the extruder inlet blocked?
The extruder inlet is the filament runout sensor. Insert filament into it — under normal conditions, it should pass through the runout sensor without noticeable resistance.
2. Is the driving gear abnormal?
Under normal conditions, there should be no debris stuck to the driving gear, and the silver gear should not rotate relative to the orange gear.
3. Is the driven gear abnormal?
Under normal conditions, there should be no debris stuck to the driven gear, and the silver gear should rotate freely.
4. Is the extruder motor abnormal?
Under normal conditions, there should be no debris stuck to the extruder motor, and the motor pulley should rotate freely.
5. Is the extruder outlet blocked?
The extruder outlet is the extruder bearing base. Under normal conditions, there should be no debris in the channel, and filament should pass through freely.
(3) If the issue persists after completing the checks above, or if you need replacement parts, please contact technical support.
For reassembling the extruder, also refer to the Toolhead Disassembly and Reassembly Guide.
¶ Endnote
If your issue remains unresolved, please contact technical support, our dedicated support team will be more than willing to assist you in resolving the issue.
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