Meshed shell and sandblasting method

A sandblasting method used to perform a surface treatment to a plurality of components and comprising steps of:

• (a) disposing a plurality of components in a plurality of meshed shells, wherein each of the plurality of meshed shells comprises:
• a first end portion;
• a second end portion opposite to the first end portion and having a weight equal to a weight of the first end portion;
• a first annular portion;
• a second annular portion connected to the first annular portion;
• a first mesh portion connected between the first end portion and the first annular portion;
• and
• a second mesh portion connected between the second end portion and the second annular portion;
• wherein both of the first mesh portion and the second mesh portion comprise a plurality of meshes, and a maximum inner diameter of each of the plurality of meshes is smaller than a penetration size of the plurality of components, wherein the sum of the weights of the first end portion and the second end portion is greater than the sum of the weights of the first mesh portion and the second mesh portion, and the sum of the weights of the first annular portion and the second annular portion is greater than the sum of the weights of the first mesh portion and the second mesh portion;
• (b) disposing the plurality of meshed shells in a container of a sandblasting machine;
• (c) controlling the sandblasting machine and actuating the container to rotate and make the plurality of meshed shells roll in the container;
• and
• (d) controlling a nozzle of the sandblasting machine to blast sand toward the plurality of meshed shells in a specific angle.