CPC B29C 33/3842 (2013.01) [B22D 29/00 (2013.01); B28B 7/346 (2013.01); B29C 33/0011 (2013.01); B29C 33/3807 (2013.01); B29C 33/3814 (2013.01); B29C 33/40 (2013.01); B29C 33/52 (2013.01); B29C 33/565 (2013.01); B29C 39/26 (2013.01); B29C 39/36 (2013.01); B29C 64/112 (2017.08); B29C 64/129 (2017.08); B33Y 10/00 (2014.12); B29C 2033/385 (2013.01); B29C 39/24 (2013.01); B29K 2071/00 (2013.01); B29K 2503/08 (2013.01); B29K 2901/10 (2013.01)] | 11 Claims |
1. A method of casting an object from a mold, the method comprising:
obtaining a mold comprising a hollow shell of rigid material, the rigid material comprising a thermoset polymer and one or more additives dispersed within the thermoset polymer,
removing at least some of the one or more additives from the hollow shell, thereby producing a plurality of pores forming an open cell network therein;
providing a metal and/or ceramic slurry into an interior of the mold; and
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 through the plurality of pores.
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