120mm PC机箱风扇网格尘埃过滤器

120mm PC case fan mesh dust filter holder

2023-08-09 05:08:33

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Summary

I recently purchased some nylon mesh dust filters for PC case fans which have a magnetic backing meant to attach to a steel PC case. They work well with steel but some locations in my cases are fully plastic so magnetic items won't work (unless I affix using tape/glue or screws). I wanted to easily remove the filters for cleaning so I designed this holder. Once assembled you can slide the mesh filter in and out of one end, no disassembly required.

Example mesh filters to use with this holder:

Silverstone FF123
There are several other manufacturers/vendors that sell similar filters (available on Amazon.com for example)

Print Settings

Printer brand:
Dremel Digilab
Printer:
3D45
Rafts:
Doesn't Matter
Supports:
Doesn't Matter
Resolution:
0.2mm
Infill:
20%
Filament brand:
Dremel
Filament material:
PLA
Notes:
I have provided files for two different clearances (between the printed pieces and the filter): 0.2mm and 0.4mm. On the printer that I have to use, using a 0.4mm nozzle and 0.2mm layer height, the 0.2mm clearance print fits snug to the filter. My mesh filters measure 120.25mm x 120.25mm x 1.6mm. Other printers/slicers/settings could affect the clearance differently. I printed my parts using 20% infill density and a wall thickness of 0.8mm (for both parts), other settings might work as well.

Design notes

Both pieces, base and cover, should be printable without supports if your printer can tolerate 45º of overhang. The two pieces snap together. If necessary the pieces can be separated by hand but if you don't have sufficient finger access then insert a small flat-head screwdriver into the rectangular holes (one at a time) in the front of the cover to gently pry the sides loose. The honeycomb pattern gives the base some structural rigidity and prevents the filter mesh from being sucked into the fan. The two tabs on the bottom of the cover help align the cover to the base, they are not part of the latching mechanism. The round holes in the base are designed to accommodate #8-32 machine screws and to completely envelop the heads of the screws (typically about 2.6mm high). Longer screw heads might rub against the filter frame when sliding the filter in or out. Other types of screws might work as well.