Frames: Sub-Assembly of a Web Frame

Explains the role of side frames in holding a ship in shape. Shows how templates are reversed in laying off pairs of frames and the use of web frames to counteract unusual pressure and strain. Shows how to place a template on a steel plate, scribe and punch the lines on the steel plate, locate stiffeners, mark water and buttock lines, and locate and punch mark lightening holes, stringer cutouts, and pipe openings. Soldering and Cutting crane hooks, transformer tops, and gear sections for rocker arms. The CM-15 shown doing straight line cutting, bevel-cutting, circle cutting, cutting from a template, and hand-tracing. Each operation is carried through from the arrangement of the material to the finish of the cut.