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Modelo 3D Compact mATX Computer Case (20.6 Liter) por Brennus no Printables

Descrição

I created a computer case to fit into a desk I made, and it looked fairly nice, so I thought I would share it.

The body is made of PLA, the diffuser from PETG, and the motherboard back plate is ABS. I personally don't trust PETG to be the material for a mobo back plate, but hey, you do you.

This case was inspired by an ITX case made by makerunit, found here: [https://www.printables.com/model/1372420-compact-and-clean-itx-case](https://www.printables.com/model/1372420-compact-and-clean-itx-case)

I designed this case with as much air flow as possible in mind. I used Chat GPT to work out appropriate thicknesses and air flow. I have been running this for about 4 months now, and I don't have any problems with temps, hardware throttling or warping of the case due to heat. 

Recommended print settings:
4 walls
4 top and bottom
40% Cubic infill

I have added a couple of alternate parts - a grill and a power bracket body.


Computer BOM

Filament:
2 x FLASHFORGE PLA Filament 1.75mm Galaxy Matte Black, 3D Printer Filament with Silver Glitter 1kg [https://a.co/d/0iO4TnTQ](https://a.co/d/0iO4TnTQ)
Official Creality PETG 3D Printer Filament 1.75mm 1KG Transparent [https://a.co/d/0h3alxUa](https://a.co/d/0h3alxUa)
Paramount 3D ABS Filament (1.75 mm 1 kg, Graphite Gray, 1) [https://a.co/d/02Vwn1Zy](https://a.co/d/02Vwn1Zy)

Case:
STARELO 16mm Computer Case DIY Boot Reset Button, Metal Momentary Switch, Blue LED Light, 16mm 5/8" Mounting Hole with Heat Shrinkable Tube [https://a.co/d/09FXVEFU](https://a.co/d/09FXVEFU) 
Round Refrigerator Magnets, 100PCS 6×3MM Small Strong Fridge Magnet, Office, Whiteboard Magnets, Durable Mini Magnets [https://a.co/d/05ZwRaBM](https://a.co/d/05ZwRaBM)
2 x PC Addressable RGB LED Strip Lights Kit - Magnetic PC Case Lighting, 2PCS 42LEDs ARGB Strip for 5V 3pin RGB Header Motherboard Asus Aura, Asrock RGB Led, Gigabyte RGB Fusion, MSI Mystic Light [https://a.co/d/0cOTdVqo](https://a.co/d/0cOTdVqo)
MoKo 400x300mm DIY PC Case Dust Mesh Filter, [2 Pack] PVC Dustproof Magnetic Dust Filter Cover, PC Mesh Grill with Magnetic Frame Strip Computer Cooler Fan Dust Filter for Computer PC Case, Black [https://a.co/d/0aC9ZoHv](https://a.co/d/0aC9ZoHv)
GRAUGEAR 20Gbps USB3.2 Gen2x2 USB-C Front Panel Adapter, Motherboard Header Extension Cable, USB-C and USB to USB3.2 Type-E Key-A 20-Pin and 19-Pin USB3.0 Connectors with PCIe Bracket[G-AD-ETC2A-20G] [https://a.co/d/0dkxODIi](https://a.co/d/0dkxODIi)
300 Pcs M3 Threaded Inserts M3 x D5 x L4 Heat Set Inserts Brass 3D Printing Knurled Metric Nuts for Plastic, 3D Printing Components [https://a.co/d/09DStNGn](https://a.co/d/09DStNGn)

M3x8 x28
M3x20 x6 - for the 80mm fans
M3x30 x4 - for the 120mm fan

Fans:
Cooler Master MF120 Lite Black Case|Liquid Cooler|Air Cooler Fan, 120mm Fan, Dynamic PWM 1,750 RPM, Air Balance Blades, Hybrid | PBT Frame [https://a.co/d/06xuTpqb](https://a.co/d/06xuTpqb)
2 x Thermalright TL-8015 CPU Fan Computer case Fan Quiet 4pin PWM PC Fan, 15mm Slimline Cooler Fan, 2200RPM Speed, 80mm CPU Cooling Fan [https://a.co/d/0bHC8xJn](https://a.co/d/0bHC8xJn)

Cable Management:
R18 Internal Size 10X15mm 1Meter Length Black Plastic Flexible Drag Chain Cable Wire Carrier Open Type for 3D Printer and CNC Machines (10mmX15mm-Outside Open) [https://a.co/d/07lUoaJG](https://a.co/d/07lUoaJG)
50ft - 1/2 Inch & 1/4 Inch Expandable Braided Cable Sleeve, Black Wire Loom, Braided Wire Sleeving, Cable Wrap Mesh [https://a.co/d/0irjEkQd](https://a.co/d/0irjEkQd)

Hardware:
ASRock B650M PG Lightning WiFi 6E AMD Ryzen 9000/8000/7000 Series Socket AM5 B650 DDR5 up to 7200+ (OC) MHz 256 GB SATA3 6.0 Gb/s Micro ATX Motherboard M.2 RGB LED BIOS Flashback [https://a.co/d/0cirPQ3H](https://a.co/d/0cirPQ3H)
AMD Ryzen 5 7600X 6-Core, 12-Thread Unlocked Desktop Processor [https://a.co/d/0gJSN8TZ](https://a.co/d/0gJSN8TZ)
Samsung 990 PRO SSD 1TB PCIe 4.0 M.2 2280 Internal Solid State Hard Drive, Seq. Read Speeds Up to 7,450 MB/s for High End Computing, Gaming, and Heavy Duty Workstations, MZ-V9P1T0B/AM [https://a.co/d/0b978JGo](https://a.co/d/0b978JGo)
Samsung SSD 9100 PRO with Heatsink 2TB, PCIe 5.0x4 M.2 2280, Seq. Read Speeds Up to 14,700/13,400 MB/s, Best for AI Computing, Gaming, and Heavy Duty Workstations (MZ-VAP2T0CW) [https://a.co/d/04k1yEmB](https://a.co/d/04k1yEmB)
Thermalright Peerless Assassin 120 SE CPU Cooler, 6 Heat Pipes AGHP Technology, Dual 120mm PWM Fans, 1550RPM Speed, for AMD:AM4 AM5/Intel LGA 1700/1150/1151/1200/1851,PC Cooler [https://a.co/d/00kMZXoa](https://a.co/d/00kMZXoa)
CORSAIR RM750e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black [https://a.co/d/08YZ4SjW](https://a.co/d/08YZ4SjW)
ARCTIC MX-4 (4 g) - Premium Performance Thermal Paste for All Processors (CPU, GPU - PC, PS4, Xbox), Very high Thermal Conductivity, Long Durability, Safe Application, Non-Conductive, Non-capacitive [https://a.co/d/02QQAn8k](https://a.co/d/02QQAn8k)

I am using a RTX 3060 12 GB and 32 GB of DDR5

Misc (Optional):
MIKA3D 6 Spools 1.75mm Silk PLA 3D Printer Filament Bundle, 6 Metallic Shiny Colors: Gold/Silver/Copper/Bronze/Coffee Gold/Rosegold, Each Spool 250g X 6 Spools, Total 1.5Kg 3D Printer Material [https://a.co/d/0dcNDTYx](https://a.co/d/0dcNDTYx)
LZLRUN 3D Carbon Fiber Vinyl Wrap - Outdoor Rated for Automotive Use - 12 inches x 60 inches Contain Knife and Hand Tool (Black) [https://a.co/d/0bo2JjLU](https://a.co/d/0bo2JjLU)

Printables

Compact mATX Computer Case (20.6 Liter)

Publicado em 16 de mar de 2026

7
Curtidas
21
Downloads
Categoria Computers
Licença Creative Commons — Attribution — Noncommercial
Arquivos (16)
attachment_body_x4.stl 100.9 KB
main_body_middle.stl 104.6 KB
back_panel.stl 194.2 KB
alt_grill.stl 91.5 KB
alt_power_bracket_body.stl 89.4 KB
front_fileter_frame_x2.stl 51.1 KB
blank_plate.stl 23.5 KB
main_body_front.stl 92.1 KB
grill.stl 164 KB
two_piece_diffuser_top.stl 104 KB
power_bracket_body.stl 104.5 KB
power_bracket_cover.stl 31.3 KB
main_body_rear.stl 104.6 KB
side_filter.stl 28.2 KB
two_piece_diffuser_bottom.stl 174.3 KB
matx_back_plate.stl 564.1 KB
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