ONENO 3DW | Sandwich Structure x Aluminum Extrusion ITX Case | Steam Machine Extended Version

Introduction

A sturdy SFF case combining 3D Printed components and 1010 aluminum extrusions. The internal structure draws inspiration from beamcase, as well as many classic A4 sandwich-style cases. Because it uses a 3D Printed + Sandwich structure, the case is named 3DW. The front of the case references the design language of the Steam Machine. It aims to be an extended version of a Steam Machine that can be used in the living room Dimensions: 314 x 132 x 182 mm (frame only) / 318 x 136 x 186 mm (with panels installed) Volume: 7.54L / 8.04L Filament consumption: approx 429g Print duration: approx 21 hours

Compatibility:

* Mini-ITX motherboard * Standard SFX power supply * CPU cooler height limit 50mm, recommended cooler axp90 x47 * 2.5-slot GPU; width <= 53mm, recommended <= 50mm; length is 10mm less than the 1010 aluminum extrusion length. For example, if installing a 290mm long graphics card, purchase 300mm long aluminum extrusions

Parts List and Links:

Hardware:

* 1010 aluminum extrusions (M3 tapped at both ends) length as needed, but at least 300mm (4 pieces) * 1010 aluminum extrusion T-slot M3 nuts (26 pieces) * M3*5*4 heat-set threaded inserts (18 pieces) * M3*6+5 single-head hex standoffs (6 pieces) * M3*5 flat head screws (16 pieces) * M3*8 flat head screws (10 pieces) * M3*10 flat head screws (18 pieces) * M3*8 pan head screws (6 pieces) * M3x5 round head screws with washers (6 pieces) * 6#-32*3/8 US cup head screws for SFX power supply mounting (3 pieces) * 8x3mm round magnets (8 pieces)

Power Extension Cable and Switch Button:

* Reserved circular hole for switch 14-15mm * C13 to C14 slim power extension cable, forward or reverse according to power supply choice, recommended length 35cm

GPU Riser Cable:

Dual reverse, the common 19cm one I used was a bit long, 17cm should be sufficient

LED Strip DIY:

5V 3-pin ARGB LED strip with 4mm luminous surface and 8mm thickness, cut to 12cm length yourself (recommended LED strip part 11.7-11.8cm, leave 2-3mm for folding the LED strip wires)

Shopping List Reference:

https://m.tb.cn/h.RtkkkVg

Printing Notes:

* The internal frame should be printed with high-temperature resistant filament, at least PETG, ABS is recommended * All parts can be printed without supports * To ensure print strength, please use the following settings: Walls: 4 perimeters; 35% infill * For proper assembly, ensure printing dimension accuracy is calibrated and consider filament sinkage rate. Reference: When I printed with K brand ABS filament, I scaled the model to 100.6% to ensure dimensional accuracy. The top, bottom, and four side panels only need to be scaled to 100.45%. Please test the appropriate scaling factor with a step of ±0.1% from the reference value based on your material before starting the final print. * The front panel frame and side panels support using the sparse infill patterns that come with Bambu Studio as a mesh pattern. You can modify the settings as you like * If the accessories do not generate much heat, the external decorative panels can be printed with PLA

For detailed assembly instructions, please read the electronic PDF manual

Note: Assembling this case requires a certain level of DIY skill. The manual only covers the case assembly. Assembling computer components requires you to have sufficient computer assembly knowledge to complete it yourself. Please try to assemble with a spare computer if possible to avoid component incompatibility or hole tolerance issues caused by incorrect filament scaling, which could leave you with an unusable machine!!!

Disclaimer

The ONENO 3DW case model is intended for experienced ITX PC DIY enthusiasts. The shared parts shopping list is for reference only. Users are responsible for reviewing part quality, selecting appropriate alternatives, and observing performance and conducting stress tests after assembly. Ensure parts are not prone to brittleness or high-temperature damage. Furthermore, the quality of the printed case may be affected by the filament used, printer model, settings, and any modifications to the model.

We will not be responsible for any financial loss or personal injury resulting from the use of these print files. If you have any concerns, please do not use these files.

Copyright Notice

The ONENO 3DW is a free and open-source printing project. Do not use the original or modified files for commercial purposes.

By using this model file, you understand and agree to this statement.