Magnetic Stirrers

The stirrer located on Hisim's Home Page does not work unless some modifications are made. The reason that it does not work is the stirrer is designed for small vessels, and a kalk reactor is not that small (anywhere from 1 to 4 gallons). The reactor built by KW contained 2.1 gallons, and the 9V, 300mA transformer did not have enough power to provide the torque to the stirrer bar. This was replaced with a 9V, 800mA transformer and it works fine. But the additional amperage causes the motor to run hot, which in turn melts the hot melt glue. Therefore 5 minute epoxy resin or a similar alternative must be used to mount the motor. Additionally the potentiometer is not required. - [Details]