Not sure how to wire more resistors in series. Resistor from Hong Kong looks tempting though. May try the rare earth magnets with a different fan too. I appreciate all of the input!
Recently built a stir plate and wired in a 25watt 3ohm rheostat (Radio Shack 271-275). I have seen alot of DIYers online use the same one. Seems as if the lowest speed setting still spins the magnet out to the edge of my 2000ml flask. I have tried both a 1" and 1 3/8" magnet. Anyone have any...