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  • Product Name: Top pattern and bottom pattern
  • Model No: Top pattern and bottom pattern
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1. In Dongrun Casting Aluminum foundry, there are 5 five people who are skilled pattern maker to build patterns, using wood, aluminum, or resin. As usually, 1 set mold including top pattern and bottom. If the structure of mold is very complex, there is a sliding block, named core too. Such cores, sometimes reinforced by wires, are used to create under cut profiles and cavities which cannot be molded with the cope and drag, such as the interior passages of housing or cooling passages in CAC tanks.