There are generally two methods for drilling glass holes based on the size of the hole diameter, one is using a table drill to drill holes, and the other is using a glass knife to cut holes. The method of cutting the inner and outer circles of glass is to use the principle of stress concentration and the idea of dividing into zero, dividing the parts of the inner and outer circles that need to be cut into zero. (1) When cutting circular glass with a glass knife and retaining the middle part, remove the outer part of the circle using the same method. (2) Glass drilling uses a table drill and a diamond sand or glass drill bit to directly drill holes on the glass. The method is as follows: ① Grinding method for drilling holes. First, determine the center of the circle and apply ink, compact the glass, place it flat on the platform of the drill, and do not move it. Then, point the 280 320 mesh gold steel sand mixed with kerosene at the glass drill hole, continuously move up and down to drill and grind, and point the gold steel sand while grinding. Grinding should be done with light and even force from beginning to end, especially when approaching wear through, and with patience ② Direct drilling. Holes can also be drilled directly using specialized glass drills with different diameters, but it is important to cool them with water during the drilling process.
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