What a row carries

Every field is stated by the maker at submission or read from a federated source that published it. Nothing is inferred, scored or ranked.

• Title and maker, as the maker gives them, with attribution on every row.
• The job it does — what it repairs, mounts, holds or replaces, in one line.
• Licence, as an SPDX identifier (for example CC-BY-4.0, MIT). A row without one does not render, and a check refuses the deploy rather than showing a row whose terms are unknown.
• A link to wherever the files live. The register points at the maker's page; it does not copy it.
• Its evidence state, shown on the row itself rather than implied. What the states mean.

The two admissible sources, and the gate on each

Maker submission — open

The maker warrants that the model is theirs to submit and chooses the licence. That warranty is the mechanism, and it is not an invention of this site: NIH 3D states in its own terms that "Users are responsible for selecting and applying the appropriate license to their content", and Cults3D places the same duty on the creator. The grant is written out in full on the submission page.

Federated sources — designed, not built

A model published on a Fediverse server can be admitted only against published, per-account consent, on four conditions:

• The account carries indexable: true. FEP-5feb, the specification that defines the flag, states that "A missing indexable attribute SHOULD be handled as indexable: false". A silent account is a refusal.
• The object carries an spdx:license identifier. No identifier, no row.
• The flag is re-checked on every ingest. If it flips to false, the row goes.
• The row links back to the origin server, and is marked as carrying no print evidence — permanently, because no make, print count or third-party print field exists anywhere in the vocabulary these servers publish.

The honest scale of that source: the flagship public instance 3dprint.social reported 197 total accounts and 33 active in a month, measured 2026-08-25. This is a village, not an ocean, and the figure is here rather than buried.

What is refused

No repository catalogue is ingested without that repository's written consent. Two requests for consent are drafted and unsent as of 2026-08-25, and until a written answer arrives, a silence is a closed door rather than a grey area. No page of any repository is scraped, at any rate, ever.

The register also makes no claim that a model works. A row without evidence says so.