Finning

Technical Support

Struggling with a specific casting defect or just need general technical support?

  • Sharp metal fins that appear perpendicular to the surface of the casting and vary in severity from superficial (about 1 mm high) to heavy (several mm high)

  • Indicates that a portion of the shell has cracked during shelling or dewax and metal fills the crack

    • Superficial finning typically occurs when the primary shell coat has cracked and is especially prevalent on round parts due to hoop stress

    • Heavy finning typically occurs when the entire ceramic shell has cracked is especially prevalent on edges

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3535 Briarfield Boulevard
PO Box 1570 
Maumee, Ohio 43537 USA
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US Phone: 419.865.9497
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Email:

RR-Marketing@dentsply.com

RRCustomerService@dentsply.com

RR-Technical@dentsply.com

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