Making a Machine

How machine molding affects pattern design; how a p maker designs and constructs a patt for a valve body, including the gating system. Supplementary filmstrip, title, also available. Making a Pattern for a Three-Part Mold U.S. Office of Education, 1945. (Precision Wood Machining Fundamentals Series. of Patternmaking No. 6) Reasons for the three-part pattern; how to make the layout; segment the body or center section; eliminate end grain on large flanges; and turn large work on the lathe