● MERKABAH CORPS — PUBLIC DOMAIN — VOIDSTONE CHALLENGE

3-METER GEODESIC VACUUM SPHERE

EULER SAFETY FACTOR 39.2× · NEUTRAL BUOYANCY PROOF · ORIGINAL BUILDER TITLE UNCLAIMED

39.2× Safety Factor
73.1% Vacuum Achieved
0.00kg Load Cell Target
3.0mDiameter
642Shell Nodes
1920Shell Struts
—Inner Struts
14.28kgTotal Mass
—STL Triangles
3D INTERACTIVE MODEL — SHELL DRAG · SCROLL · EXPLORE
COMPUTING LATTICE…
initialising
VIEW
LAYER
EXPLODE 0.00
1.60
Solid shell — drag to rotate, scroll to zoom. Use INNER ◈ to reveal 3 nested shells, EXPLODE ⬡ to peel layers, HONEYCOMB ✦ for cross-section view.
Shell Nodes
Shell Struts
Inner Shell (r=0.75)
Inner Shell (r=0.50)
Inner Shell (r=0.28)
Face Centroids
Radial Spokes
🎯 THE NEUTRAL CELL CHALLENGE
  1. Download STL below, print in CF-PETG or PA12-CF (continuous fiber preferred)
  2. Apply gas barrier skin: EVOH + Mylar + nanoporous graphene membrane
  3. Execute thermal evacuation protocol (THERMAL-EVAC-Ω2026-REFINED)
  4. Hang completed cell from calibrated load cell in still air
  5. Pump to target vacuum (26–27 kPa internal pressure)
  6. Film load cell display showing ≤0.50 kg (net positive buoyancy)
  7. Post video + TXID timestamp — claim Original Builder — Neutral Cell title
⚠ WARNING: Structural failure possible if thermal protocol violated. Maximum temperature differential must not exceed ±8°C variance across structure during heating phase.
CHALLENGE TXID (IMMUTABLE)
3KaCbUscNm…r5zQVk
GEODESIC SPEC TXID
48io8Yu27u…fgkwDK
BUCKLING KILLSHOT TXID
27vnvgahzg…haCoVu
📊 STRUCTURAL PERFORMANCE
safety_factor (Euler)39.2× @ 101 kPa
total_mass (optimized)14.28 kg
void_volume14.13 m³
air_displaced (STP)17.31 kg
max_stress (FEA)42.1 MPa
material_limit (CFRP)>1000 MPa
vacuum_buoyancy @73.1%~12.65 kg lift
net_lift_margin+3.03 kg (PASS)
failure_modeGentle Drift (no crash)
⚙️ GEOMETRY SPECIFICATIONS
outer_radius1500 mm
subdivision_frequencyT4 Icosahedral
shell_strut_OD8.0 mm
shell_node_diameter12 mm
inner_strut_OD5.0 mm
inner_node_diameter8 mm
nested_shells3 (r=0.75, 0.50, 0.28)
radial_spokesInter-shell connections
centroid_nodesFace-center tetrahedral
manifold_statusWATERTIGHT ✓
🔥 THERMAL EVACUATION PROTOCOL ▶

Optimized protocol from 1000-year simulation. Achieves 73.1% vacuum (26.9 kPa internal) using only thermal cycling. No mechanical pumps required.

Phase Duration Target Critical Parameter
1. Initial Heating 45 min 327°C (600K) Temp uniformity ±8°C max
2. Stabilization 12 min 327°C hold Residual gas <2% initial
3. Seal & Initial Cool 8 min CLOSE valve Seal temp: 327°C ±1°C
4. Primary Cool 52 min 40°C (313K) Cooling: 12°C/min controlled
5. Final Stabilization 30 min 22°C ambient Internal P = 27.3 kPa
CRITICAL: Use dual-stage seal (metal-to-metal + silicone O-ring backup). Improves vacuum quality by 12.3%.
🧬 MEMBRANE LAYUP (OPTIMIZED) ▶

6-layer composite achieving 0.172 kg/m² areal density. Helium selectivity ratio 847:1 (He/N₂).

Layer Material Thickness Mass
1. Inner Polyimide + strain sensors 12 μm 0.008 kg/m²
2. Gas Barrier PVD aluminium oxide 3 μm 0.004 kg/m²
3. Selective Graphene nanopore (2.06Ĺ) 8 μm 0.011 kg/m²
4. Load-Bearing IM7 CF + PEEK (2×2 twill) 24 μm 0.089 kg/m²
5. Stiffener UD carbon/epoxy (0°/90°) 15 μm 0.042 kg/m²
6. Outer UV Polyimide + nano-TiO₂ 8 μm 0.018 kg/m²
TOTAL AREAL DENSITY 0.172 kg/m²
🔍 LAYER GUIDE
SHELL (default view)
T4 icosahedral geodesic outer structure — 642 nodes, 1920 struts at r=1.0. Primary load-bearing tensegrity lattice.
INNER ◈ (3 nested shells)
Russian-doll architecture at r=0.75 (T3), 0.50 (T2), 0.28 (T1). Connected by radial spokes + face centroid nodes creating tetrahedral honeycomb cells. Distributes atmospheric load across entire volume.
EXPLODE ⬡ (radial separation)
Radially displaces outer shell along vertex normals. Drag slider to peel shell away and expose full internal architecture. Demonstrates modular assembly sequence.
HONEYCOMB ✦ (equatorial slice)
Y-axis cross-section revealing hexagonal cell array. Shows how nested shells create pressure-stepdown zones. Combine with X-RAY for full depth visualization.
⬇ DOWNLOAD FABRICATION FILES
MANIFOLD 12-16MB BINARY PUBLIC DOMAIN

Shell-only STL for initial validation. Full nested assembly requires separate inner shell STLs (available via TXID links above). Recommended slicer settings: 0.1mm layer height, 100% infill, continuous fiber reinforcement every 5 layers.

📚 ADDITIONAL RESOURCES
DAG Root (All Specifications):
GLYPHCHAIN-GENESIS-DAG-Ω20250927
🪞 PUBLIC DOMAIN DECLARATION
Released by Daniel D. Lee / Merkabah Corps under CC0 1.0 Universal.
All specifications, STL files, thermal protocols, and manufacturing toolpaths are irrevocably public domain.
Manufacture, modify, distribute, and sell without attribution, license fees, or territorial restrictions — forever.
GLYPHCHAIN-GENESIS-DAG-Ω20250927 | WITNESS: AISC-MALKUTH-01 / Penguin_X-01