An open hardware modular drawer system for the VW Caddy Maxi (2014, Model 2K), designed to efficiently organize euro boxes in your cargo area using standard aluminum profiles.

The left drawer also allows carrying Festool Systainer / Makita Makpacs:

The drawing looks like this:

This project provides a complete 3D model and documentation for building a custom cargo frame that maximizes storage space in the VW Caddy Maxi cargo bed. The system features two pull-out drawers optimized to carry standard euro boxes on a minimal aluminum frame.

Key Features:

• Two heavy-duty sliding drawers (400mm and 600mm width)
• Designed for standard euro boxes (300mm, 400mm, 600mm sizes)
• Built entirely from standard aluminum profiles (B-type slot 6mm)
• Heavy-duty slides with 1250mm extension
• Optional second-level platform for additional storage
• Fully parametric design for easy customization

Vehicle Dimensions (VW Caddy Maxi 2014):

• Bed width: 1120mm
• Bed length: 1300mm
• Frame height: 440mm (accommodates 320mm euro boxes with clearance)

Components:

• Aluminum profiles: 20x20mm, 20x40mm, 40x10mm (B-type slot 6mm)
• Slides: SO-TECH KV2-200-H76-L1250-LC heavy-duty drawer slides
• Connectors: Cube connectors (20mm), connector plates (38x38x3mm)
• Support: 80x80x3mm angle bars for center mounting

Drawer Configuration:

• Left drawer: 400mm width × 1350mm depth (holds euro boxes 400×300mm and 400×600mm)
• Right drawer: 600mm width × 1350mm depth (holds euro boxes 300×400mm and 600×400mm)

This project uses OpenSCAD for parametric 3D modeling. OpenSCAD is a free and open-source CAD application that uses a scripting language to define 3D models, making it perfect for parametric designs that can be easily modified and shared.

.
├── main.scad                    # Main assembly file
├── config.scad                  # Configuration parameters
├── assemblies/
│   ├── base_frame.scad         # Fixed frame mounted to vehicle
│   ├── base_frame_portal.scad  # Portal/rib structures
│   ├── drawer_system.scad      # Complete drawer assembly
│   ├── drawer.scad             # Individual drawer module
│   ├── drawer_frame.scad       # Drawer frame structure
│   ├── drawer_boxes.scad       # Euro box positioning
│   └── slides.scad             # Slide mechanism assembly
├── lib/
│   ├── profiles.scad           # Aluminum profile definitions
│   ├── eurobox.scad            # Euro box models
│   ├── slide.scad              # Slide mechanism model
│   └── support.scad            # Support plates and angle bars
└── util/
    └── animate.scad            # Drawer animation utilities

1. Install OpenSCAD: Download from openscad.org

2. Open the project: Load main.scad in OpenSCAD

3. Preview: Press F5 for quick preview of the model

4. Render: Press F6 for full render with proper geometry

5. Animate: Enable "Animate" in View menu to see drawer movement

   • The animation cycles through opening left drawer, right drawer, and both together

6. Customize: Edit config.scad to adjust dimensions for your vehicle or euro box sizes

• STL: File → Export → Export as STL
• PNG: File → Export → Export as Image

Aluminum Profiles (B-type slot 6mm):

• Profile 20x20mm: ~12m total
• Profile 20x40mm: ~10m total
• Profile 40x10mm: ~4m total
• 80x80x3mm angle bars: 2× 1300mm length

Hardware:

• 2× SO-TECH KV2-200-H76-L1250-LC drawer slides
• Cube connectors 20mm (B-type slot 6)
• Connector plates 38x38x3mm
• M6 screws, T-nuts, and angle brackets (B-type slot 6 compatible)
• 1× wooden plate 1120×1300×18mm (optional, for top platform)

Euro Boxes: Configure based on your needs. The default configuration uses:

• 6× 400×300×320mm boxes
• 2× 600×400×320mm boxes

1. The base frame features portal-like structures that mount to the vehicle bed
2. Center angle bars provide mounting points for inner slides and vertical supports
3. Slides are mounted using T-nuts in the profile slots
4. Drawer frames use cube connectors for rigid corner joints
5. Optional vertical supports can be added for heavy loads on the top platform

All dimensions are parametric and defined in config.scad. You can easily adjust:

• Vehicle bed dimensions
• Frame height
• Euro box sizes and positions
• Drawer widths
• Slide specifications

This project is open hardware, licensed under CERN-OHL-S (CERN Open Hardware License Version 2 - Strongly Reciprocal).

You are free to use, modify and build it, including commercially. If you modify and distribute it, you must share your changes under the same license.

See LICENSE for full details.

Contributions are welcome! Whether it's improving the design, adding new features, or fixing issues, feel free to submit pull requests.