File:LittleEngines PreparingCastingMolds 1955.png: Difference between revisions
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(Preparing a mold of parts for a live steamer, Bob Harpur's helper makes grooves in the sand, where molten metal will flow to form castings when the wooden patterns have been removed. "Popular Science", January 1956) |
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Latest revision as of 21:51, 24 October 2013
Preparing a mold of parts for a live steamer, Bob Harpur's helper makes grooves in the sand, where molten metal will flow to form castings when the wooden patterns have been removed. "Popular Science", January 1956
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| current | 21:51, 24 October 2013 |  | 466 × 429 (387 KB) | Dnevil (talk | contribs) | Preparing a mold of parts for a live steamer, Bob Harpur's helper makes grooves in the sand, where molten metal will flow to form castings when the wooden patterns have been removed. "Popular Science", January 1956 |
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