Status
Primary target
25 bars C5-C7Chromatic 6061-T6 aluminum flat-bar glockenspiel.
Variant
10 bars pentatonicC-major art-fair build using the same stock and support logic.
Readiness
V5 candidateNo bars cut, mounted, struck, measured, or tuned yet.
Authority
Design-table firstMeasured K, node-support sustain, and framed tuning remain blockers.
Release boundary: use this packet for design review and pilot planning. Do not treat the bar lengths, node supports, metallurgy constants, SVGs, PDF, site, or Wolfram source as build-verified until the validation rows carry measured evidence.
Authority Map
| Domain | Current authority | Blocked until |
|---|---|---|
| Bar dimensions | family-spec.csv, glockenspiel-design-table.xlsx | C5/A5/C7 pilot bars measure effective K for the actual stock lot. |
| Node support | Formula nodes at 22.4% and 77.6%, plus drawings/mounting-detail.svg | Grommet durometer/sustain pilot is logged. |
| Metallurgy | 6061-T6 literature/workbook K = 204431 | Supplier certificate or measured K_eff confirms the actual material lot. |
| Tuning | validation.csv and validation-loop.csv | Flat, post-trim, mounted, and framed tuner captures are recorded. |
| Visuals | visual-output-register.csv | All generated/review visuals stay downstream of design-table/CAD authority. |
Representative Bars
| Bar | Hz | Length | Node 1 | Node 2 | Use |
|---|---|---|---|---|---|
| C5 | 523.251 | 9.883 in | 2.216 in | 7.667 in | Low pilot, longest bar. |
| A5 | 880.000 | 7.621 in | 1.709 in | 5.912 in | Mid-scale K check. |
| C7 | 2093.005 | 4.941 in | 1.108 in | 3.834 in | High pilot, shortest bar. |
Packet Files
Design
design.mdFree-free beam model, material matrix, support and tuning discipline.
Schedule
family-spec.csv25 chromatic rows plus 10 pentatonic rows.
Validation
validation.csvMeasured Hz/cents/sustain capture table.
Loop
validation-loop.csvReadiness checks for K, supports, metallurgy, frame, and visuals.
Authority
authority-ledger.csvHuman-readable claim-to-evidence ledger.
Visuals
visual-output-register.csvMachine-checked visual authority register.
CAD
OpenSCAD starterLayout mockup, not final native CAD.
Print
print-packet.pdfPrintable review packet, not measured proof.
Visual Review
Images




Next Gates
| Gate | Evidence needed |
|---|---|
| Pilot bar K | Cut C5, A5, C7 long, measure on soft node supports, compute K_eff. |
| Support damping | Compare grommet durometers and log sustain seconds plus buzz/rattle observations. |
| Supplier check | Verify bar stock alloy, temper, dimensions, price, lead time, and substitution path. |
| Framed tuning | Record soft/medium/loud tuner captures after mounting in the walnut frame. |
| Native CAD | Generate/review SolidWorks or STEP deliverables before shop-release claims. |
Interactive Wolfram Model
Live parametric explorer (empirical estimates — not fabrication authority).