Prototype of a micro polishing machine for glass sample preparation

Abstract

Glass materials research often relies on small glass samples to measure their optical properties. In this research, we present a prototype of a small polishing machine designed to prepare glass samples. It combines the advantages of sandpaper and polishing using a sander. The speed control system uses a voltage control system, which is the simplest way to control the rotational speed by directly adjusting the voltage supplied to the motor. The rotating speed is proportional to the voltage with a rotational speed of 0-300 rpm. This prototype polisher can efficiently polish glass samples. The results are smooth and consistent, with the fineness of the glass surface depending on the sandpaper number used. The polisher has a small size, low maintenance costs, low cost per polishing cycle.