Attachments for handling and tracking fabricated custom objects

A method comprising:

• identifying a mold comprising a physical model of a dental arch of a patient and one or more first features, the physical model comprising a base portion and a teeth portion, the teeth portion comprising a plurality of teeth extending from a first distal end of the dental arch to a second distal end of the dental arch, wherein an orthodontic aligner is to be formed over the plurality of teeth of the physical model, the plurality of teeth of the physical model being shaped to correspond to a plurality of tooth-receiving cavities of the orthodontic aligner, the one or more first features being associated with the base portion of the physical model;
• causing a pre-fabricated attachment to be removably attached to the mold via the one or more first features at the base portion of the physical model and one or more second features of the pre-fabricated attachment, wherein the one or more first features comprise a flattened area forming one or more holes, wherein the one or more second features comprise one or more protrusions to attach to the flattened area via at least one of the one or more holes;
• associating a traceability component of the pre-fabricated attachment with a patient identifier (PID) of the patient and a treatment stage corresponding to the mold;
• and
• causing a handling component of the pre-fabricated attachment to be secured by a robot or a person to transport the mold and the pre-fabricated attachment during production of the orthodontic aligner.

A pre-fabricated attachment for a mold, the pre-fabricated attachment comprising:

• one or more attachment features configured to removably attach to one or more mold features at a base portion of a physical model of the mold, wherein the one or more mold features comprise a flattened area forming one or more holes, wherein the one or more attachment features comprise one or more protrusions to attach to the flattened area via at least one of the one or more holes, wherein the mold comprises physical model of a dental arch of a patient at a treatment stage of an orthodontic treatment of the patient, the physical model comprising the base portion and a teeth portion, the teeth portion comprising a plurality of teeth extending from a first distal end of the dental arch to a second distal end of the dental arch, wherein an orthodontic aligner is to be formed over the plurality of teeth of the physical model, the plurality of teeth of the physical model being shaped to correspond to a plurality of tooth-receiving cavities of the orthodontic aligner;
• a traceability component configured to be used to determine one or more identifiers corresponding to the mold;
• and
• a handling component configured to be secured by a robot or person to move the mold and the pre-fabricated attachment during production of the orthodontic aligner.