Air Filter for Your Room on the Cheap: 6 Steps

So in researching air filters for my room I was very disappointed to find that not only did most of the units cost $50 or more but the annual filter replacement costs were way too much. So I made my own small quiet one on the cheap.2 hours build timeParts - Tools- Cardboard box of some sort. Just big enough to fit the fans. I chose an Optorite DVD burner drive box I had lying around.- Fans. I chose 2 blue LED 120mm fans I you can pick up at www.svc.com or www.newegg.com on sale from $10-15.- Filter. I first tried cutting a whole house filter but it is wavy and has a metal guard so I went back to home depot and found Vent filters for about $8 for a 12 pack of 4 in X 12 in filters. - Box Cutter or x-acto knife- Screw Driver and included fan screwsImprovements for my next version. - Add a switch to turn it on and off.- Add a Fan speed control. - Add a LED kill switch or use fans with no LEDS (Hard to fall asleep sometimes but is good for a night light)- hook to a 12 volt DC to AC power adapter so you don't need to run a wire from the computers power supply. First I stenciled the fans with a pencil so I knew how much to cut out. Then I cut out both holes for the fans.Next I had to decide on how to cut the holes for the filter so there would be enough air passing through but still support the filter. I measured and cut the filter to size which turned out to be 6 x 4 inches. Then I measured on the box 1/4 inch in from where the filter was going to be and started cutting rectangles leaving a bar across the middle so it wouldn't be too flimsy. Next I poked and drilled pilot holes for the fan screws and installed the fans in place. Then I cut a groove in the bottom side where I could have the wires run out of the box without letting much air escape. Once the fans were installed I cut the filter in half 4 x 6 to fit in its designated area closed up the box and plugged it right into my computer's power supply since it already had that molex connection. After 1 month and 17 days I opened it up (see first pic). A month after that (see pic 2). Since then I just take the filters out and shake them outside and or vacuum them. I haven't replaced a filter yet. I don't think it is big enough or powerful enough for my whole room though. I still get dust but it definitely takes a lot longer to accumulate.

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Let's Talk About the Application of Thermal Conductive Silica Gel in LED Lighting Industry
Thermal conductive silica gel sheet is a widely used thermal conductive interface material. It is in the form of sheet, high pressure shrinkage, high reliability, high temperature resistance, excellent thermal conductivity and insulation, with viscosity on the surface, simple and convenient construction. It can be die-cut and punched according to the size and shape of heating devices.Heat conductive silica gel sheet is a kind of heat conductive medium material made by calendering with silica gel as the base material and adding various auxiliary materials such as metal oxides. It is usually called heat conductive gasket, heat conductive silica gel gasket, heat conductive silicon film, soft heat conductive gasket, heat conductive silica gel pad, etc. it is specially produced for the design scheme of using the gap to transfer heat and can fill the gap, It not only completes the heat transfer between the heating part and the heat dissipation part, but also plays the roles of insulation, shock absorption and sealing. It can meet the design requirements of miniaturization and ultra-thin equipment. It is a good heat conduction filling material with manufacturability and usability, and has a wide range of thickness and Application.Led thermal conductive silicon film is mainly used between aluminum substrate and heat sink, between aluminum substrate and shell, etc. Today, we mainly introduce the successful application of thermal conductive silica gel sheet in LED industry: there are many kinds of LED lamps. For indoor LED lamps, thermal conductive silica gel sheet with relatively low thermal conductivity is generally used, which can reduce the cost of the product and meet the needs of the product itself. For some outdoor high-power LED lamps, such as street lamps, the power is much higher than other indoor lamps, In order to better heat dissipation of lamps and improve the service life of lamps, thermal conductive silica gel sheets with relatively high thermal conductivity are generally used.The inherent viscosity of the heat-conducting silica gel sheet facilitates the construction. If the customer needs the heat-conducting silica gel sheet to have strong viscosity to replace the screw fixation, he can also choose to give one-sided or double-sided adhesive backing to the heat-conducting silica gel sheet. If the heat-conducting silica gel sheet needs to lock the screw, please remember to choose the heat-conducting silica gel sheet containing glass fiber cloth, which has the properties of anti puncture and anti tear. In short, the heat conductive silica gel sheet can be customized according to customer requirements to meet customer needs. It can be die-cut and punched according to the size and shape of heating devices.
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