The system of record for mechanical parts.

AI drafts in pencil. Engineers sign in ink. Keep geometry, available checks and engineering decisions with the revision you are reviewing.

See it work

Historical pilot geometry · decisions and observations illustrated

Historical Rupsetu pilot workspace
Pilot model preview unavailable. Historical workspace capture shown; the example record remains readable.

The AI writes in pencil. The engineer records in ink.

Compare revisions, read the available checks and record your engineering decision. A generated part still needs review before a manufacturing handoff.

  1. AIProposes a candidate: raise the motor body to 36 mm, keep the 4 × Ø6.6 pattern.Draftcandidate
  2. Checks geometry envelope tolerance accessevidence
  3. EngineerReads the evidence, accepts the tolerance for this revision, records the release basis.Signed

Illustrated review sequence · a generation is not manufacturing approval

Keep evidence with the revision.

Review what changed, the recorded checks and their source runs, unresolved questions and recorded decisions. Missing evidence still needs to be supplied.

Change

Create or revise a part, then review its geometry and available checks.

A harness for AI, not a chat.

Develop a revision, run the available checks and compare the result. The engineer reviews the evidence and records the decision before a manufacturing handoff.

The record is the environment the next revision is developed in.

The workspace

A pilot workspace capture: the loop, the recorded entry and the model on the sheet.

The Rupsetu Engineering Cockpit showing the loop stages across the top, the witnessed entry column on the left with changed, why, checks and evidence rows, and a servo motor adapter plate on the drafting sheet.
Engineering Cockpit · historical pilot capture · current checks depend on your part and revision

Why we are building this.

Every serious engineering team already keeps a record. It lives in drawings, emails, spreadsheets and memory, and it is the first thing lost when a part changes hands. We think the record should be the product, and that an AI is only safe on a real part when it works inside one.

Bring a part.

Early access runs on real parts from your backlog. We set the workspace up with you and stay in the loop through the first revisions.

Request early accessA short form, answered by the founder