| CPC B22F 12/30 (2021.01) [B22F 10/28 (2021.01); B22F 12/38 (2021.01); B28B 1/001 (2013.01); B29C 64/245 (2017.08); B29C 64/255 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)] | 16 Claims |

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1. A device comprising:
a sidewall;
a base movable relative to the sidewall, wherein the sidewall and the base define an internal volume for receipt of build material in an additive manufacturing process; and
a membrane that is continuous and extends around the internal volume, wherein a first end of the membrane is attached to the base such that the membrane is movable with the base, and wherein the membrane at least partially extends along the sidewall to form a flexible barrier between the internal volume and the sidewall, wherein the first end of the membrane is disposed on a first side of the sidewall, the first side of the sidewall facing the internal volume, and wherein a second end of the membrane is disposed on a second side of the sidewall, the second side of the sidewall being opposite to the first side and facing away from the internal volume.
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