MAKING A PATTERN USING A GREEN AND A DRY SAND

Duration: 14 min

Year Published: 1945

Creator: Office of Education (Department of Health, Education, and Welfare)

Color: B&W

Sound: Optical sound

Description: Describes how a green sand core is molded. Tells how a patternmaker determines when to allow for a green sand core, designs a pattern allowing for a green sand core, and visualizes and constructs a particular pattern. From the PRECISION WOOD MACHINING series. Problems in Patternmaking