QIDI Box PTFE Fix Pack – 4-Tube Aligner + Extra Jointers (Anti Sensor Error)

NAME (Title)

QIDI Box PTFE Fix Pack – 4-Tube Aligner + Extra Jointers (Anti Sensor Error)

3D MODEL DESCRIPTION

This is a small fix pack for the QIDI Box filament system (made around the QIDI Plus 4 setup, but it should work on any printer using a QIDI Box).

There’s a common known issue where the splitter / filament sensor fails to detect filament. In many cases the root cause is simple: the filament does not enter the system perfectly straight (dirty tip, bad cut, or mainly bad alignment), and the stock PTFE routing isn’t great.

The original setup only includes 2 PTFE 4-tube jointers.

My solution is to add more alignment points and sleeves/tubes:

• Use 5 jointers instead of 2 (spread along the PTFE paths)
• Use the included striated “tight” sleeves to keep tubes straight, aligned and firmly held
• Result: smoother filament path and way fewer sensor read errors (works well for me so far)

INCLUDED FILES

• 4-PTFE Tube jointers (clones) [It's recommended to use the tighter versions but your choice may depend on material and printer]
• Striated / Non-Striated / Tight / Non-Tight sleeves (multiple lengths: 30 / 60 / 100 / 120 mm) [Striated-Tighter tubes worked better for me]

• Material: PLA or PETG
• Layer height: 0.20 mm
• Infill: 20%
• Supports: not needed

NOTES

This is a practical DIY fix. Filament cleanliness and a clean cut still matter, but this improved alignment and consistency a lot for me.