Desktop Fan




Introduction: Desktop Fan

     Does your laboratory get hot and humid while you are experimenting? Are you sweating from the effort of soldering a joint together? If you answered yes, then it sounds like you are in need of this desktop fan made from a computer fan. Faced by the heat in my room while working on projects, I tried using a box fan. All that did was blow away my stuff and only deliver a barely noticeable stream of air. After tinkering around at my sweltering desk for an hour or two, I came up with this desktop fan. Even though it may be small, this reused computer fan delivers a concentrated stream of air that cools a work space off like magic. Now wipe those beads of sweat off your forehead permanently and follow this Instructable on making a desktop fan from a few materials.
     Before you begin, gather these materials and tools:
  •      crimping tool (available at your local hardware store) 
  •      two wire splices
  •      12 volt adapter (see my instructable on how to convert a cell phone charger into a power supply)
  •      12 volt computer fan (these can be found in computers and large electronics)
With these supplies you are ready to make your desktop fan!
     1.) First, if you are using a normal adapter, cut off the plug at the end and strip the two wires. 
     2.) Next, insert a wire from the adapter and another wire from the fan into a wire splice, noting polarity (red wires positive, black wires negative). Crimp the wire splice with the crimping tool tightly. Give a gentle tug on the wires to make sure they won't come apart. 
     3.) Repeat step 2 on the other two wires. Your adapter should now be connected to the fan. Check once more to ensure the right polarity, and then plug the adapter into the wall.
     The fan should immediately start spinning! Sit back and admire your little creation as it cools you and your work space. You can mount your fan on a base by attaching zip-ties through the screw holes in the fan and some pre-drilled holes in a small block of wood. Set your fan in the corner of your desk and enjoy the cool breeze.
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    7 years ago on Introduction

    Just wondering, on the adapter, since the wire is black, how will i know if which wire is the positive or negative wire to connect to?


    Reply 7 years ago on Introduction

    You can use a multimeter to check for polarity. You won't burn the motor out if you reverse polarity, but it will spin in the opposite direction.

    Very Nice icecats! I like your stability solution. The base looks roomy enuf to attach an on/off switch & possibly a pot for speed adjustment... to elaborate a it on your ideas!