aluminum trihydrate

Discussion in 'Materials' started by StealthAssassin, Nov 22, 2009.

  1. StealthAssassin
    Joined: Jun 2007
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    StealthAssassin Junior Member

    Has anyone used this for mold making?
     
  2. CDK
    Joined: Aug 2007
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    Location: Adriatic sea

    CDK retired engineer

    I bet you're a headbanger!
     
  3. StealthAssassin
    Joined: Jun 2007
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    StealthAssassin Junior Member

    ??? I don't get It... What Is that supposed to mean?
     
  4. StealthAssassin
    Joined: Jun 2007
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    StealthAssassin Junior Member

    So noboby can comment on this filler additive In the mold making process?
     

  5. Herman
    Joined: Oct 2004
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    Location: The Netherlands

    Herman Senior Member

    ATH is a common material in mold construction. It limits shrinkage in polyester resins. All rapid tooling systems are full of it.

    A suggested layup:

    -tooling gelcoat
    -vinylester with low tex CSM (2 layers)
    -rapid tooling system, follow procedure of manufacturer, or use low shrink polyester mixed 1:1 with ATH
    -topcoat (please do protect the ATH filled resin from moisture)
     
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