Compact 8L 6-Bay NAS Case (Mini-ITX / Mini PC + FlexATX)

# ⚠ IMPORTANT: Premium Design – Read Before Downloading!

Please note that the full STL files and the complete building guide for this 8L 6-bay NAS case are not included in this free download.

To support my work and get the complete, tested design, please purchase the project files via Cults3D (Secure payment via PayPal / Credit Card, no registration required for purchase):

🔥 Launch Sale: Now only €9.89 (Regular price: €14.99)

👉 [Click Here to Get the Complete Design on Cults3D](https://cults3d.com/en/creations/compact-8l-6-bay-nas-case-mini-itx-mini-pc-flexatx)

Thank you for supporting independent 3D designers! Below you can read the full specifications and hardware requirements for this build.

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# 🖥 Compact 8L 6-Bay NAS Case (Mini-ITX / Mini PC + FlexATX)

A compact, high-efficiency 8-liter 6-bay NAS case designed for Mini-ITX motherboards or Mini PCs (specifically compatible with the GMKtec G11), powered by a FlexATX PSU. This design focuses on minimalism and efficiency, requiring only 5 printed parts and less than 1kg of filament in total!

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### ✨ Key Features

📦 *Ultra-Compact:** Only 8 Liters in volume, ensuring a very small desktop footprint.

💾 *Storage:** 6x Hard Drive bays (supports 3.5" HDDs up to 26.4mm thickness).

⚙ *Motherboard Compatibility:** Fits a standard Mini-ITX motherboard or a Mini PC, with support for active 140mm fan cooling.

🛠 *Easy to Print:** Only 5 printed parts in total!

🧵 *Filament Efficient:** Requires less than 1kg of filament to print the entire chassis.

⚡ *Power Supply:** Designed for a standard FlexATX power supply.

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### ⚠ Compatibility Note

Mini-ITX motherboards vary significantly in their internal layouts. Connector placements (e.g., ATX 24-pin, SATA ports) differ between models. Please check your hardware compatibility and cable routing options carefully before purchasing this design!

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### 📐 Case Dimensions & Printing Specifications

📏 *Minimum Print Volume Required (X,Y,Z):** 219 x 190.51 x 195 mm

📐 *Final Case Size:** X: 219mm, Y: 195mm, Z (with feet): 190.51mm

🧵 *Recommended Material:** PETG (ABS and ASA also work perfectly).

🥞 *Layer Height:** 0.2mm

🖨 *Tested Settings:** Printed on a Bambu Lab P2S with default PETG settings (Infill: 15%, Walls: 2, Top/Bottom Layers: 5).

🏗 *Supports:** Some supports are required for the main frame (middle section) and the top arc of the fan mount.

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### 🛠 Required Hardware & Components (BOM)

🪛 *17x** M2 threaded inserts (M2 x L3 x OD3) | [Buy on AliExpress](https://www.aliexpress.com/item/1005006071488810.html)

🪛 *15x** M2x8mm machine screws (carbon steel hexagon socket flat countersunk head) | [Buy on AliExpress](https://www.aliexpress.com/item/1005007798633538.html)

🪛 *2x** M2x8mm machine screws (for securing the G11 Mini PC to the bracket)

🪛 *2x** M2x6mm machine screws (for the FlexATX bracket)

🛡 *2x** 80mm black fan grills | [Buy on AliExpress](https://www.aliexpress.com/item/4000118191927.html)

🛡 *1x** 140mm fan grill (dust filtered recommended) | [Buy on Akasa](https://www.akasa.co.uk/search.php?seed=GRM140-AL01-BK)

🪛 *2x** HDD screws per HDD mount

🪛 *4x** 30mm M3 screws (for Mini-ITX motherboard standoffs)

🪛 *16x** M3 nuts (for Mini-ITX standoffs, allows adjusting motherboard height)

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### 🔌 Recommended PC Components

🧠 *CPU/Mainboard:** [GMKtec NucBox G11](https://www.gmktec.com/products/gmktec-nucbox-g11-mini-pc-amd-ryzen-embedded-r2514), or any Mini-ITX motherboard (**Note:** Use an ITX form factor without an integrated I/O shield!).

💡 Tip:* It is highly recommended to mount the motherboard high and route the cables underneath it. This significantly improves airflow from the top 140mm fan. With this setup, a simple passive heatsink is enough for the CPU—no separate active CPU cooling fan is needed!

🔋 *Power Supply:** FlexATX PSU. [FSP FlexGuru 300W](https://www.fsplifestyle.com/hu/product/Flexguru300W.html) is highly recommended as it includes all necessary cables. You will only need one additional Molex-to-2×SATA power adapter.

🌪 *Fans:**

* 2x slim 80mm PC fans (up to 15mm thick): [Arctic P8 Slim PWM PST](https://www.arctic.de/en/P8-Slim-PWM-PST/ACFAN00295A)

* 1x slim 140mm PC fan (up to 15mm thick): [Arctic P14 Slim PWM PST](https://www.arctic.de/en/P14-Slim-PWM-PST/ACFAN00268A)

🗄 *Storage:** Up to 6x 3.5" HDDs (3.5"-to-2.5" drive adapters can be used if you want to mount SSDs).

🪢 *Cables:** 6x SATA cables (approx. 20cm). Please double-check cable lengths before buying, as requirements vary depending on your specific motherboard layout.

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### ℹ Additional Information

🔘 *Power Button:** The power button is completely optional and can be routed to the back of the case. Since this is a 24/7 Home Server/NAS, you can simply enable "Power on after power loss" in the BIOS and skip the physical button entirely!

⚠ *GMKtec G11 Power Supply Note: Since the FlexATX PSU only powers the drives in this setup, it can instead be permanently switched on by bridging PS-ON and GND, as shown in the last photo.**

❌ *No Hot-Swap:** There is no expensive hot-swap backplane included. This design omits it to reduce cost, complexity, and to keep the chassis size as small as possible.