Glass mug identification method - two

2) The thickness should be consistent: the distribution of glass materials in each part of the drinking utensible should be symmetrical. When selecting, observe the light. If the light sense is the same in all places, it means the thickness is the same. If there is too much difference between light and shade, the thickness is not consistent. If the shoulder of the cup is too thin, it is generally not easy to find, but if you observe the light, you will find that the thin place is too bright. The thickness requirements of drinking utensils for different purposes are different. Tea set should be thinner, and wine set, cold drink set can be a little thicker. Generally, the bottom of the drinking ware should be a little thicker, but if it is too thick, the heat transfer is slow and the heat is easy to crack; The walls should be slightly thinner than the bottom, but too thin will be too weak and not strong. When choosing, look from the outside side, the bottom should be horizontal, not slope or pot shape; Flicking the walls with your fingers should make a pleasant sound.