When the CNC processes some high-precision aluminum alloy parts or large aluminum alloy parts, the surface finish of the product is very important. The appearance of one product can directly affect the cost performance of the product. How to make some aluminum alloy parts with high surface finish To the high light effect? First, the machine tool must use cutting oil instead of cutting fluid. The lubricating fluid of the cutting fluid is not as large as the cutting oil, but the cooling effect is stronger than the cutting oil. If the product is to achieve high light effect, most of the products will be cut for lubrication. oil.