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Metal Parts from Papercraft Molds

Metal Parts from Papercraft Molds

This project began when I read the following entry [#274] in Volume 1 of Popular Mechanics’ 1913 The Boy Mechanic: The round lead weight for shot-putting or hammer throwing can be cast in a hollow cardboard or pressed-paper ball, sold in department and toy stores for 10 cents. Cut a 1/2-in. hole in the ball […]

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