A three-dimensionally printed capsule (100) includes a sintered exterior (105) and an unsintered powder (112), both formed from a first powder supply. The sintered exterior (105) defines an interior portion (110) that houses the unsintered powder (112). The sintered extern includes a base (102) and a removable cap (104). The removable cap (104) can transition between a fixed position and a detached position. The interior portion (110) is sealed relative to the external environment in the fixed position, while the interior portion (110) is exposed to the external environment in the detached position. The unsintered powder is protected from the external environment when the removable cap is in the fixed position. The unsintered powder (112) is exposed to the external environment when the removeable cap (104) is in the detached position.
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