| CPC B23K 26/342 (2015.10) [B22F 12/00 (2021.01); B22F 12/222 (2021.01); B22F 12/30 (2021.01); B22F 12/50 (2021.01); B23K 26/0643 (2013.01); B23K 26/0648 (2013.01); B23K 26/082 (2015.10); B23K 26/083 (2013.01); B23K 26/0876 (2013.01); B23K 26/702 (2015.10); B29C 64/153 (2017.08); B29C 64/232 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B22F 10/10 (2021.01); B22F 10/28 (2021.01); B22F 2998/10 (2013.01); Y02P 10/25 (2015.11)] | 21 Claims |

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1. An additive manufacturing apparatus for forming an object by steering an energy beam onto powder layers to selectively consolidate areas of each layer, the apparatus comprising:
a build chamber;
an elevator movable in the build chamber, the elevator being arranged such that a build substrate can be releasably secured thereto; and
a powder dispenser configured to deposit successive layers of the powder onto an upper surface of the build substrate as the build substrate is lowered by the elevator, wherein
the build substrate is releasably securable to the elevator via a fastener, the fastener being accessible for releasing the substrate from the elevator from a side surface of the build substrate that is between the upper surface and a lower surface of the build substrate.
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