Keep the dust out with this filter.

[Bluefront]

Check this out...Been running it for almost two months. No dust that I can see has got through this filter. It's a Power Care #165-036 from Home Depot. (Lawn-mower filter). It should fit any 80mm rear fan.....you could mount a stud through the fan guard or make a little bracket like I did in the photos. I tested this setup and found only a slight restriction to airflow. It works....

Photos

Oh...that's a foam ,washable pre-filter you see over the main paper pleated filter. Think it cost about $8

 

[figgypower]

The picture doesn't seem to work, at least for me. Also, do you know how much the airflow is restricted?

Edit: Nevermind... It seems rather large, though. How well do those coffee filters work, Peacock?

 

[The Dancing Peacock]

I use a coffee filter taped over my intake fan, seems to work rather well.

 

[Lizardman]

wow that lawnmower filter sure is purty.

 

[SilentRunning]

OK, I must be missing the big picture here. All my rear fans blow out, the air enters from the front. So how does putting a filter on the exhaust fan help keep dust out?

 

[amdskip]

Originally posted by: SilentRunning
OK, I must be missing the big picture here. All my rear fans blow out, the air enters from the front. So how does putting a filter on the exhaust fan help keep dust out?

Exactly what I was thinking. Usually computers suck air in from the front and blow the hot air out the rear. The dirt is gonna get sucked in and settle in the computer. Dirt generally doesn't go out the rear as easily as its sucked into the case.

 

[Bluefront]

Heh....Both my front and rear (the one in the pics) case fan blown into the computer with this setup. This is called a positive pressure setup. All the air entering the case is filtered. Only the P/S fan and a little slot fan blow out. This setup stays clean as a pin.

FWIW.. That rear fan you see in the pics blows directly onto an Alpha heatsink (celeron 2.0), using a Zalman 5700 shroud. I don't need a fan on the alpha. At max usage the cpu temp rarely goes over 40C.

 

[cheapgoose]

that bracket you're using, was it homemade or purchased?

 

[Bluefront]

I had to make that little bracket because the fan grill had already been cut out. There are some more photos posted there that show the whole ductwork setup.

 

[LED]

I guess I'm just partial to the ladies panty hose that I use...It's the thought of it I guess

 

[Bluefront]

Well this filter keeps dust out, not just bugs or leaves. It has a paper pleated filter material, and was designed to be effective in the dirtiest conditions.....mowing a lawn.

It also has a large enough surface area to provide very little restriction to the air-flow. The little foam filters you usually see, or pantyhose, greatly restrict the air and clog very quickly.

Remove one wingnut and this filter is off for cleaning or replacement. Couldn't be any easier...unless you don't use any filtration.