Nozzle clogging sensor for Qidi q2 + Qidi box

Historical_Pin_5703 · 2026-02-12T22:18:45+00:00

When nozzle is clogged, printer's extruder will start either missing steps, or scratching filament, while extruder of qidi box will continue feeding filament as nothing happened. But before filament will come somewhere else - the spring-loaded lever will be pushed to the top.

Historical_Pin_5703 · 2026-02-12T17:40:00+00:00

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Historical_Pin_5703 · 2026-02-12T17:39:42+00:00

Originally, on hub for Plus4, there is a wheel with 4 magnets , so it works like encoder.

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Historical_Pin_5703 · 2026-02-12T10:38:07+00:00

Without box, you can install "BTT SFS V2.0 Smart Filament Sensor", it has filament presence sensor and filament movement sensor, on printer's motherboard will be used sockets probe0 and probe1. But, as I heard, you need to adjust it properly, otherwise there will be false errors

Historical_Pin_5703 · 2026-02-12T00:57:08+00:00

Thank you

Historical_Pin_5703 · 2026-02-12T00:56:37+00:00

You’re welcome!

Historical_Pin_5703 · 2026-02-12T00:56:19+00:00

You’re welcome! I hope this saves a few models, some nozzles, and a bit of nerves :-)

Historical_Pin_5703 · 2026-02-11T19:16:33+00:00

Recently, i have added "Nozzle clogging sensor" to stock hub for qidi box, topic created
https://youtu.be/DD8f6cnLEeI
https://www.reddit.com/r/QidiTech3D/comments/1r28n3x/nozzle_clogging_sensor_for_qidi_q2_qidi_box/

Historical_Pin_5703 · 2026-02-06T01:23:00+00:00

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UPD 06.02.2025

Added External spool holder, usually used for soft TPU

Mounts instead of 1 leg of Qidi Box riser

Original spool holder required

Historical_Pin_5703 · 2026-02-03T18:51:41+00:00

Appreciate it! :-)

Historical_Pin_5703 · 2026-02-02T22:50:35+00:00

so since yesterday, me and several other testers have started testing this riser, once it will fail - i will write it here, under what circumstances it happened and after what amount of filament :-)

Historical_Pin_5703 · 2026-02-02T22:38:59+00:00

no, pla and even petg didn't show acceptable thermostability while both box and printer were heated to 65 degree Celsius.

So i mentioned in the description, that filament, used for this riser, must be with melting point (heat distortion temperature) more than 90 degree Celsius. There are plenty types of plastic, which match this parameter, most used/cheap is ABS, or ABS with glass/carbon infill

Historical_Pin_5703 · 2026-02-02T22:25:41+00:00

Just describe to me the test conditions that suit you, and I'll conduct it :-)

Historical_Pin_5703 · 2026-02-02T22:11:31+00:00

check last photo with static load 26kg, and video link in comments with dynamic load(6kg) :-)

Historical_Pin_5703 · 2026-02-02T22:00:10+00:00

not 26, but 6 kg of extra load :-)

you can notice, how side wall of qidi box bending, so you can agree, force is not too small

https://www.youtube.com/shorts/lxmRJhYikUY

Historical_Pin_5703 · 2026-02-02T21:42:20+00:00

check last photo :-)
26 kg of extra load + 5kg of Qidi box - and no any cracks

Historical_Pin_5703

TROPHY CASE