Ultra-Compact Mini-ITX Gaming Case - 3D Printable High-Performance PC Enclosure

Please be indulgent, this was my first big project created in 2019/2020 :)

Overview

Experience the ultimate fusion of compact design and high-end gaming performance with this revolutionary 3D-printable Mini-ITX case. Measuring just 399mm x 150mm x 350mm, this enclosure challenges conventional PC building by delivering full-sized gaming power in an incredibly slim profile.

Engineered for enthusiasts who refuse to compromise, this case accommodates graphics cards up to 320mm in length while maintaining an elegant, space-efficient footprint perfect for desk setups, LAN parties, or minimalist gaming stations.

Key Features

Innovative Thermal Design

• Dual watercooling support: Bottom-mounted 2x140mm radiator for CPU cooling (required)
• Optional top radiator: Additional 2x140mm radiator for GPU watercooling when you need extreme cooling performance
• Chimney airflow architecture: Completely sealed sides force all airflow through the entire system, creating a highly efficient thermal pathway from bottom to top (or vice versa)
• Flexible fan orientation: Configure your cooling for bottom-to-top or top-to-bottom airflow based on your preference

Maximum Compatibility in Minimal Space

• Mini-ITX motherboard support
• SFX power supply compatibility
• Graphics cards up to 320mm - supports most high-end GPUs including flagship models
• Vertical GPU mounting: Graphics card positioned behind the motherboard via PCIe riser for optimal space utilization
• Integrated storage: SSD mount directly on the graphics card

Smart Construction

• Tool-free access: Remove the top panel and sides without any screws for easy maintenance and upgrades
• PETG recommended: Heat-resistant material choice ensures durability near warm components
• Optimized for 3D printing: Designed from the ground up for FDM printing with practical assembly in mind

Why This Design?

Traditional Mini-ITX cases force you to choose between size and performance. This design eliminates that compromise:

✅ Slim profile that fits where traditional cases can't
✅ High-end GPU support without the bulk
✅ Efficient cooling through intelligent airflow channeling
✅ Custom watercooling integration for silent, powerful performance
✅ Easy access for upgrades and maintenance

Ideal For

• High-performance gaming in a compact footprint
• LAN party enthusiasts who need portable power
• Desk minimalists wanting clean aesthetics without sacrificing performance
• Watercooling enthusiasts seeking a unique custom build platform
• 3D printing hobbyists looking for a challenging and rewarding functional print

Build Specifications

Dimensions: 399 x 150 x 350mm
Motherboard: Mini-ITX
GPU Length: Up to 320mm
PSU: SFX format
Cooling: 2x140mm radiators (bottom required, top optional)
Material: PETG recommended for heat resistance

What You'll Need

• Mini-ITX motherboard
• SFX power supply
• Graphics card (up to 320mm)
• PCIe riser cable
• 2x140mm AIO watercooler (CPU)
• Optional: 2x140mm AIO watercooler (GPU)
• Standard PC hardware and cables
• Screws and fasteners (see assembly guide)

Assembly Notes

This case features a tool-free panel removal system for easy access to your components. The sealed side design ensures that every bit of airflow from your radiators passes through your components for maximum cooling efficiency.

Important: Ensure top and bottom fans are oriented in the same direction to maintain proper airflow through the chimney design.

Print Settings Recommendation

• Material: PETG (recommended for heat resistance)
• Infill: 20-30% for structural panels
• Layer Height: 0.2-0.3mm
• Supports: May be required depending on specific parts

The Result

A stunning, ultra-compact gaming PC that delivers flagship performance without the desktop footprint. Perfect for those who believe that great things come in small packages – but with the cooling capacity to handle whatever you throw at it.