Sheet-metal greenfield blueprint · Round 5 · Lane 08Modular Pedestal Drum Stack

Five single-headed sheet-metal drums stacked on a central pedestal pole — pentatonic A-minor (A2-C3-E3-G3-A3), played top-down with mallets. A floor tom's footprint, a tom-stack's melodic range.

Family

Membranophone5 single-headed cylindrical drums

Shells

1.2 mm CRSRolled, TIG-seam, lathe-chamfered

Footprint

380 mm × 1450 mmBase plate × total height

Weight

~14 kgBase 5 · pole 1.5 · drums 5×1.4 · hw 0.5

Pitches

A2 C3 E3 G3 A3A-minor pentatonic (D omitted)

License

CERN-OHL-W + CC-BYHardware + documentation, dual

· Specifications at a glancePer-drum spec table

Drum	OD (mm)	Height (mm)	Note	Hz	Tension (N/m)	Head Z (mm)
1	300	180	A2	110.00	425	720
2	250	160	C3	130.81	419	890
3	200	140	E3	164.81	426	1050
4	150	120	G3	196.00	343	1200
5	100	100	A3	220.00	215	1380

· Parametric designdesign.md

▶ design.md MD Parametric design with frontmatter Open

· Driving dimensionsparameters.csv

▶ parameters.csv CSV Every driving dimension downstream agents need Open

· Acoustic targetsTuning notes

▶ tuning-notes.md MD Targets, procedure, bearing edge, sustain Open

· First-principles modelmodular-pedestal-drum-stack-starter.wl

Bessel-function membrane fundamentals and Love's thin-cylinder shell ring mode for each of 5 drums. Predictions populate the predicted column of validation.csv.

▶ modular-pedestal-drum-stack-starter.wl WL Acoustic first-order model Open

· Pass/fail gatesvalidation.csv

▶ validation.csv CSV Predicted vs. measured, with pass/fail Open

· Bill of materialsBOM + sourcing

▶ bom.csv CSV Parts, qty, materials, supplier, cost Open

▶ sourcing.csv CSV Supplier, SKU, URL, min-qty Open

▶ hardware.csv CSV Snare lugs, rods, claws, pucks, feet Open

· Sheet-metal authorityCut list + bend table

▶ cut-list.csv CSV Blank sizes per part, nesting notes Open

▶ bend-table.csv CSV Feature, angle, radius, K-factor, sequence Open

▶ flat-pattern-checklist.md MD DXF conventions, per-part checklist Open

▶ solidworks-plan.md MD Feature tree, configurations, design table Open

· Cut → form → join → finishFabrication plan

▶ fabrication-plan.md MD Maker Nexus-keyed sequence with QC gates Open

▶ cnc/operations.csv CSV Per-op machine, setup, run-time estimates Open

· Builder-facingAssembly manual

▶ assembly-manual.md MD Step-by-step build sequence Open

· Risk registerKnown risks + mitigations

▶ risks.md MD Acoustic, manufacturability, safety, supply Open

· Capture planPhoto shotlist

▶ photo-shotlist.md MD Hero, detail, process, showcase shots Open

· Quote-readySupplier RFQ

▶ supplier-rfq.md MD Email text for steel, hardware, drum-parts Open

· Image galleryConcept renders

modular-pedestal-drum-stack — concept render

modular-pedestal-drum-stack — exploded diagram

modular-pedestal-drum-stack — lug, tension rod, and claw macro

modular-pedestal-drum-stack — bearing edge chamfer macro

Interactive Wolfram Model

Live parametric explorer (empirical estimates — not fabrication authority).