Xiaomi Air Purifier Filter Inner Barrel Filter Core

August 15 update: Optimized top cover buckle structure

November 14 update: After printing another set, it was found that tall, slender parts are still prone to minor issues, so the number of holes has been reduced, and the printing difficulty should be lower

The model is too large and takes too long to print, so it is recommended to print with 0.28mm or higher layer height

Compatible with Xiaomi 1st, 2nd, and 3rd generation filter elements, the 20x29cm specification. The model is 140mm tall; stacking two can fill it. It is only recommended to use the bottom bucket lid; the top one is not needed, as obstruction on the fan intake surface will increase noise. The filter elements for 4/4lite/4pro have different inner diameters or heights, but you can scale it yourself to print; theoretically, it should work

The hole diameter is 2.0mm, which can accommodate activated carbon black balls and potassium permanganate purple balls. The buckle rotates for fixation; after inserting, turn counter-clockwise to close the lid. Assembly tolerance has been reserved, but due to different material sinkage rates, it is estimated that some materials will be difficult to assemble after printing

When filling, it is recommended to do so in a large container, as some will definitely spill out. Additionally, a small funnel model has been uploaded, which can be used together