Wood Machining Series. Problems in
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Patternmaking) How a green sand core is molded; how a patternmaker determines when to allow for a green sand core, designs a pattern allowing for a green sand core, visualizes and constructs Supa particular pattern. Supplementary film-
Complete catalog record
Type: Motion Picture
Sources
- 3434 U.S. Government Films — title, format, description, catalog record
Record added 2026-07-13 14:19:20