Engineering Specifications
1. Material Composition
| Parameter | Specification | Testing Standard |
|---|---|---|
| Primary Material | Grade A European Basswood | ASTM D143-94 |
| Density | 0.42 g/cm³ | ISO 3131:1975 |
| Moisture Content | 6.8% ±0.5% | DIN 52183 |
| Surface Hardness | 3.2 kN (Janka) | ASTM D1037 |
2. Structural Components
Laser-Cut Shelving System:
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Tolerance: ±0.03mm (Class II fit)
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Kerf Width: 0.1mm (CO₂ laser)
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Interlock Angle: 92° (prevent seasonal warping)
Load-Bearing Capacity:
| Shelf Length | Max Distributed Load |
|---|---|
| 35mm | 180g |
| 50mm | 120g |
| 70mm | 80g |
Manufacturing Process
1. Digital Fabrication Workflow
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CAD Modeling
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Software: SolidWorks 2024 (Education Premium)
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Mesh Resolution: 0.01mm
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Stress Analysis: Finite Element Method (FEM)
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Laser Cutting Parameters
Power: 45W Speed: 8mm/s Frequency: 5000Hz Assist Gas: Compressed Air (0.8MPa)
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Post-Processing
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Deburring: 400-grit sanding
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Edge Sealing: Food-grade mineral oil
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Quality Control: 10x magnification inspection
2. Assembly Engineering
Connection System:
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Type: Modified French Cleat
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Engagement: 2.5mm depth
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Friction Coefficient: μ=0.4 (wood-wood)
Recommended Assembly Torque:
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Wood Screws: 0.15 N·m
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Glue Bond: 3.2 MPa (Titebond III)
Technical Documentation
1. Dimensional Tolerances
| Component | Nominal Size | Tolerance |
|---|---|---|
| Vertical Panel | 85mm | +0/-0.05mm |
| Shelf Notch | 3.2mm | ±0.02mm |
| Back Panel | 0.8mm | +0.1/-0mm |
2. Environmental Specifications
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Operating Temperature: 10°C to 35°C
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Relative Humidity: 30% to 55% RH
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UV Resistance: 500+ hours (ISO 4892-3)
Comparative Analysis
| Feature | Standard Market Offerings | GuMo Specification |
|---|---|---|
| Material Thickness | 1.2mm | 1.8mm (+50%) |
| Joint Precision | ±0.2mm | ±0.03mm |
| Load Test | Static 50g | Dynamic 180g |
| Surface Finish | Unsealed | Food-grade sealed |
Assembly Protocol
1. Recommended Tools
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Magnifying Visor (≥3.5x)
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Precision Tweezers (Dumont #5)
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Micro Clamps (5mm jaw)
2. Critical Alignment Steps
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Base Assembly
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Squareness tolerance: <0.1° deviation
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Use 30° drafting triangle for verification
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Shelf Installation
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Sequential loading from center outward
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15-minute curing time between shelves
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Final Adjustment
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Check with 0.05mm feeler gauge
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Apply paraffin wax to moving parts
Quality Assurance Metrics
| Test | Method | Acceptance Criteria |
|---|---|---|
| Drop Test | 50cm onto MDF | 0 structural damage |
| Humidity Cycle | 24h @ 85% RH | ≤0.2% dimensional change |
| Load Endurance | 72h @ 150% max load | <0.5mm deflection |
Maintenance Specifications
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Cleaning Protocol
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Soft brush (000-grade)
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Isopropyl alcohol (70%)
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Never use water-based cleaners
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Long-Term Preservation
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Annual beeswax application
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Store at 40-45% RH
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Avoid direct sunlight (>50,000 lux)
Ordering Information
Production Lead Time:
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Standard: 7 working days
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Custom: 12 working days
Packaging Specifications:
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Vacuum-formed PET tray
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Anti-static foam lining
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Humidity indicator card
Shipping Parameters:
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Max stacking: 8 units
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Temperature-controlled option available
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