Cortez Forensic Report

I. Project Summary

• Role: Lead Mechanical Engineer / Surface Development Consultant.
• Mandate: Execute the mechanical architecture and complex organic surfacing for “Cortez,” the reference wireless keyboard for the Galaxy HomeNet system — transforming loose industrial-design sketches into a manufacturable hard model for ODM hand-off on a compressed timeline.
• Core Achievement: Delivered a fully surfaced, tooling-ready Pro/ENGINEER database in a six-week sprint, resolving a stop-ship geometric conflict between the 19.00 mm industrial-design key pitch and the vendor’s 19.05 mm standard without the $30,000 tooling penalty.

II. The Anatomy of Failure

1. The Flat Failure: A Keyboard That Couldn’t Speak

• Trigger: The hard-model review of June 19, 2000 exposed catastrophic defects. The top surface was entirely flat — 0° of tilt — so the infrared emitter fired parallel to the floor instead of within the 3–15° vertical window needed to reach the Galaxy Gateway receiver on top of the television (Sony benchmarks ran 7–11°). The unit rocked on the tabletop, the “eye” detail carried sharp non-manufacturable edges, and the underside corners near the feet bulged “too puffy” against the sculpted design intent.
• Intervention: A 43-hour surgical Pro/ENGINEER reconstruction: 28 hours mechanically angling the primary top surface to enforce the signal trajectory inside the ID envelope, 9 hours lofting highly organic surfaces into the left and right grip areas per the ID sections, and 6 hours resolving edge conditions and preparing the release package (rel_2d_6_27.zip) for the model shop, Sputnik Models.
• Result: The re-machined surfaces came back documented as “flawless,” and the program made the Galaxy technology-showcase deadline.

2. The Matrix War: 0.05 mm From a Stop-Ship

• Trigger: Industrial design specified a 19.00 mm key pitch; the manufacturing partner Silitek’s standard SK-7510 matrix runs 19.05 mm. The 0.05 mm delta accumulated across the array until peripheral keys drifted out of concentricity and collided with the bezel — compounded by Silitek’s Enter and Shift keys running physically larger than the Magellan benchmark. Silitek’s formal warning: “The rubber pad on the right-hand side is too close to the edge. It could be hard to design the PCB and membrane.” Their price to shrink two keycaps into compliance: $30,000 in new tooling.
• Intervention: Matrix arbitration by amputation. Eliminated the rightmost key column (Page Up/Down) from the main hard-key matrix and migrated those functions — along with TV/Video, View, and Codeset — to a separate elastomeric keypad molded into the grip area. Mapped the keep-out battlefield in cross-sections (cortezkeys.pdf) to prove the narrowed array fit.
• Result: The standard 19.05 mm COTS matrix fit the ID envelope, the membrane-seal keep-outs were restored, and the $30,000 tooling charge evaporated.

3. The Data Void: Engineering Blind

• Trigger: The alternate supplier, Panasonic, delivered IGES “wireframes” exported from Catia/I-DEAS — geometrically hollow lines in space with no surface topology, explicitly missing the navigation keys (declared unusable on review, October 17, 2000). Silitek, working from 2D, rejected the custom navigation cluster as a “No Can Do” and refused to validate the battery cover without 3D geometry.
• Intervention: Parallel reconstruction. Rebuilt the master geometry natively in Pro/ENGINEER, simulating the vendors’ constraints and generating definitive solid geometry that proved the navigation-cluster stack-up valid — forcing both suppliers to conform their tooling to the reconstructed surfaces rather than the reverse.
• Result: A single sovereign source of truth; vendor rejections retracted; the release package became the governing document.

4. The Mass Violation: Heavier Than Magellan

• Trigger: The hard model exceeded the strict 0.6 kg target (without batteries) set against the legacy Magellan benchmark — flagged in the same June 19 review: “Hard model too heavy.”
• Intervention: Aggressive coring of the thick organic grip sections, internal ribbing engineered into the voids to retain rigidity, and wall-thickness optimization across the primary enclosure.
• Result: The 0.6 kg target met without sacrificing the sculpted form or structural integrity.

III. Governance & Rhythm

• The Pulse: High-velocity iteration on weekly status reports and bi-weekly invoicing; design reviews triggered same-day CAD restructuring against the Galaxy showcase deadline.
• The Artifacts: WebTV Cortez Keyboard Specification 2.2 (PRD); the June 19, 2000 hard-model review log; the rel_2d_6_27.zip release package; Silitek’s Reliability and Environment Test protocols (QSR012 bare drop, carton/gift-box drop, vibration, thermal cycling — transmitted April 20, 2000; the archive holds the protocols, not the final production scorecards).

IV. Quantified Impact

• Billed $24,900 in a single month (June 2000) for the accelerated surface-development rescue.
• Rectified a 0.05 mm accumulated tolerance conflict between ID specification (19.00 mm) and vendor tooling (19.05 mm).
• Avoided $30,000 in custom tooling NRE by re-architecting the key matrix around standard vendor components.
• Engineered the 3–15° IR transmission angle into the primary housing geometry to secure the signal path.
• Met the 0.6 kg mass target via aggressive coring, internal ribbing, and wall-thickness optimization.
• Executed the 43-hour reconstruction sprint: 28 hours of angle enforcement, 9 hours of organic lofting, 6 hours of edge conditioning and release.

V. Source Trail

The claims above rest on the project’s primary evidence archive — vendor drawings, review logs, and release packages — compiled through the NotebookLM forensic registry:

• SK-7510 Key switch layout Drawing KK7510-401 (May 16 2000).dwg — the vendor’s standard matrix that started the pitch war.
• cortezkeys.pdf — the layout map used to arbitrate the key matrix.
• kb6-r03 Panasonic RFQ critique — the assessment of the alternate supplier’s package.
• id_ir.prt.zip — Panasonic’s hollow wireframe data, preserved as evidence.
• rel_2d_6_27.zip — the final release package delivered to the model shop.
• WebTV Cortez Keyboard Specification 2.2 — the governing PRD.
• Silitek Reliability and Environment Test protocols (April 20, 2000).