Traffic Signs,Rectangle Traffic Safety Signs,Aluminum Sheet Parking Sign,Road Signs And Symbols Yangzhou Langxu Lighting Technology Co., Ltd , https://www.street-lighting.com Based on more than 20 years of work practice, the author has exchanged, improved, tested, summarized, designed and manufactured the large front angle cast iron turning tool shown in Figure 1, which has achieved good results in practical applications. Even when it is cut on a less rigid lathe, it is less prone to vibration and is much lighter to cut than any conventional roughing turning tool. In contrast, the wear of the tool and the durability of the tool have changed a lot (Figure 2).