After seeing the other posts about it and pricing my own (no lower than $75) I thought I'd build my own too.
Parts list:
Waterproof box from Walmart $12
12v Cooling fan from PC power supply $0
Power switch from PC power supply $0
Potentiometer from an old CB $0
4 Bolts and nuts $0
4 Neoprene washers $1.52
Magnet from an old hard drive $0
AC adapter (12v output) $0
Total $13.52
Beats the heck out of $75 to $90! All I need now is a stir bar.
Here are the results:
Top down view
Power switch and Potentiometer
Magnet glued to the top of the fan
Had to use the multi-colored ties, it's in a clear box!
Parts list:
Waterproof box from Walmart $12
12v Cooling fan from PC power supply $0
Power switch from PC power supply $0
Potentiometer from an old CB $0
4 Bolts and nuts $0
4 Neoprene washers $1.52
Magnet from an old hard drive $0
AC adapter (12v output) $0
Total $13.52
Beats the heck out of $75 to $90! All I need now is a stir bar.
Here are the results:
![IMG_6340.jpg](https://proxy.imagearchive.com/7d2/7d2d5c7b30d5fcf36fd1d6a6537c67c0.jpg)
Top down view
![IMG_6348.jpg](https://proxy.imagearchive.com/8b1/8b12b3af2618ab8a8762c7cfa0937b84.jpg)
Power switch and Potentiometer
![IMG_6349.jpg](https://proxy.imagearchive.com/d34/d34133cff11e64e39a866033234f1665.jpg)
Magnet glued to the top of the fan
![IMG_6350.jpg](https://proxy.imagearchive.com/988/98868c327c54348aad7230d38c61df5b.jpg)
Had to use the multi-colored ties, it's in a clear box!
![IMG_6356.jpg](https://proxy.imagearchive.com/8fc/8fc715dc29eda4aa78726da6b6299df2.jpg)