Molding with a three part flask
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Shows how to use a deep follow board; the technique of facing, ramming, and venting a deep green sand core; how to use a cheek in a three-part flask; and the purpose and method of step-gating.
Sources
- 16mm Filmography (legacy record) — title, year, description, catalog record
- usgov-av-1974 — title, year, creator, length, color, sound, description
- 3434 U.S. Government Films — title, year, creator, length, format, description, catalog record
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