1965-02-01

Use of Foam Plastics for Pattern-Making and Its Application to Tooling and Production Castings 650433

The process discussed is available for use by engineers in design of prototype work and small run or high production castings. The purpose in the use of foam as a casting pattern is to reduce pattern and core box costs to a minimum when one-piece or low volume parts are required. It should always be considered when weldments are discussed. Additional advantages are apparent in the reduction of delivery time required for a finished casting.
The pattern is produced in a positive form and thus allows the designer to see the actual size, shape, and design before it is cast.

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