When the blender “burns out” the problem is probably not with the electric motor  *  more than likely the circuit board has interrupted the flow of electricity  *  circuit boards are used to change the amount of voltage (and amperage) that reach the electric motor – more voltage; more speed, less voltage; less speed  *  more amperage; more current, less amperage; less current  *  this is done with resistors, transistors, transformers, capacitors, condensers, fuses, circuit breakers, etc.  *  most circuit boards can be by-passed in an emergency and a blender can run on one speed until the mixing is done  *  the electric motor seems too simple to break down and be the problem when a blender stops  *  here is an easy recipe for making an electric motor  *  make a neat coil by rolling 2 feet of single strand 20-gauge magnet wire around your index finger  *  Finish by wrapping each loose end around the coil three times to hold them in place  *  leave at least two inches of of wire at each end of the coil  *  Sand the insulation off each end of the wire  *  these exposed ends will become the electrical contacts  *  by covering only the top half of each wire with ink from a marking pen – the top half becomes re-insulated – from the marking pen ink  * This becomes the commutator  * Open two large paper clips and loop the ends so that they can be used as a stand to support and hold the coil  *  take a 3 inch block of wood and drill small holes about two inches apart to set the paperclips in  *  make sure the loops on the clips are about 1 1/4 inches above the base  *  Balance the coil so that it will rotate easily inside the loops  *  Beneath the coils – place one or more magnets and raise them so that they are close to the coil without having them touch  *  make sure that the magnets are very close to the coil and that the coil can spin freely  *  let’s make the electrical connections  *  Use wire clip leads to connect each terminal of a battery to one of paper clips that is supporting the coil  *  the coil may begin to spin on it’s own – if not – give it a slight flick to get it started  *  It should start spinning around  *  If necessary add a second battery by connecting two batteries so that the positive end is wired to the negative end of the other  *  then connect one of the loose contacts to one paper clip and the other contact to the second paper clip  *  by connecting the batteries in series – the voltage in the circuit will increase  *  I have not made this motor yet, but I can’t wait to give it a try!