Creality Official Filament Buffer Assembly Compatible with SPARKX i7 CFS Lite Auto Feeding System，Built Photoelectric Sensor & Tangled Detection Function, Original 3D Printer Part

It is an official Creality replacement component custom-made for the SPARKX CFS Lite automated filament feeding system. Constructed to withstand long-duration continuous printing with low abrasion, it perfectly supports lengthy printing tasks This buffer assembly features a compact overall size measuring 77×21×32 millimeters, which fits seamlessly into the internal installation position of the CFS Lite feeding unit Its internal precision detection unit is composed of a photoelectric sensing chip, matching spring and fixed black structural block. It effectively identifies messy filament conditions to stop empty extrusion and scrapped printed models Apart from activating the detection sensor, the built-in spring delivers physical buffering compensation. When feeding resistance rises sharply, this structure reserves a small section of filament for temporary extrusion consumption, preventing layer unevenness and printing defects triggered by abrupt feed interruption Once filament twists or knots on the spool to create abnormal feeding resistance, this buffer will rapidly sense the anomaly and send an alarm signal to the printer system. It can also detect the common filament grinding issue (where feeding gears carve grooves into filament leading to idling rotation) and pop up system reminders timely