In the 7th issue of "Mechanical Workers" in 1987, I published the article "Semi-automatic milling machine" written by me. In September 1991, Mr. Huang Shuisheng, a radio component factory in Yichun City, Jiangxi Province, wrote a letter referring to the structure and processing of the movable plate. The key points of the design and processing of the movable plate are described below.
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