The worlds first hand held Wine glass polishing machine
I could not see the point of waiters trying to shine a wine glass by hand it never seemed logical given the science and advancement in our world of engineering.
Some of the first versions i made were battery powered (i have not given up on it been battery) but i soon realised that the motor needed much more torque which means 12 volts or mains. when experimenting with batteries i found that the brush spun well but when it came up against brushing resistance it slowed down in effect placing a place a short circuit across the battery warming it up, the batter would then quickly loose it qualities.
I tried several different types batteries in series / in parallel to get the voltage and torque but the end result was always the same. We needed power to feed the motor to overcome the resistance when the brush meets the glass. I didn't want to work with 240 volts because there are obvious dangers operating at this voltage, so i moved to 12 volts.
Once i mastered the power required i worked on the brushes which had different materials, then we worked on the connection (motor coupling )
im always improving sparkle wizard.