With deal with milling, the reducing action mainly requires spot at the top corners of the milling cutter. Experience milling is used to cut flat surfaces to the workpiece or to chop flat-bottomed cavities. Straddle milling uses two finish mills mounted on two different sides of exactly the same arbor. https://millingmachinesused67721.kylieblog.com/27229268/top-guidelines-of-thresher-machine-hsn-code