TECHNIQUES FOR CASTING FROM ADDITIVELY FABRICATED MOLDS AND RELATED SYSTEMS AND METHODS

    公开(公告)号:US20180370081A1

    公开(公告)日:2018-12-27

    申请号:US15981279

    申请日:2018-05-16

    Applicant: Formlabs, Inc.

    Abstract: According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

    TECHNIQUES FOR CASTING FROM ADDITIVELY FABRICATED MOLDS AND RELATED SYSTEMS AND METHODS

    公开(公告)号:US20180370080A1

    公开(公告)日:2018-12-27

    申请号:US15981265

    申请日:2018-05-16

    Applicant: Formlabs, Inc.

    Abstract: According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

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