PC test bench / open frame PC case
Changelog
2023-06-28: Fixed the position of the PCIe slot screws. New file name: “ITXbase-_bottom v2.stl”
2023-12-04: Fixed height of PCIe bracket (thanks @sonicscrewfu for the feedback)
2025-01-06: Fixed motherboard holes diameter to 3mm (thanks @RickBiscuits_2508568 for the feedback)
2025-03-09: Various changes (see below) (thanks @Randomdude_2302240 and @Denitz for the feedback)
- Made all the screwholes fit M3 screws (except the ones on the SSD sled which remains the same and the ones for the PSU which may depend on your PSU brand/region)
- Added a PSU shield which fits a SFX power supply (125mm x 63.5mm)
- Added a merged version of both the base and tunnel that can be printed in one piece (3d printer with a minimum bed size of 220mm x 200mm required)
- Moved old models to folder “old version files”. Use the models in this folder only if you have printed some parts before 2025 and need the matching files.
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Features
Supported components:
- Mini-ITX motherboard.Â
The stand-offs allow for approx 6.5mm of space on the back of the motherboard. - One full-size PCIe card (GPU or other device) up to two slots
- Up to two 2.5in SSD / HDDÂ
- ATX PSU or SFX PSU (make sure to print the appropriate shield for your PSU)
Custom Add-ons
- I left some M3 sized holes on the front of PSU "tunnel" (where the SSD sled is) you can attach custom things to. They're spaced by 10mm from each other (measured from center to center)
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Assembly guide:
Parts needed:
- 14x M3 screws (see instructions below)
- 4x to mount the motherboard to the base
- 4x to mount the PSU to the shield
- 4x to attach the motherboard base to the “PSU tunnel”
- 2x to attach the SSD sled to the PSU tunnel
- 4x PSU screws (these may be either M3 or 6-32 screws depanding on the PSU vendor and region)
- 4-8x 2.5" SSD-HDD screws if you want to use the sled
Assembly Instructions:
00-Glueing the 3d printed parts
(Optional step, if you have a 3d printer that can print 220x200mm parts skip to section 01)
a. Glue the two halves of the “motherboard base” together using the overlapping sections (see image below)
b. Glue the two halves of the "PSU tunnel" together using the cilinders to align them (see image below)
01-Assembling the test bench and motherboard installation
a. Use 4x M3 screws to secure the motheraboard base to the PSU tunnel.
b. Use 4x M3 screws to attach your ITX motherboard to the base.
02-PSU installation
a. Secure your PSU to the PSU shield with its screws (see above, “parts needed” section for clarification on PSU screws). Make sure to orient the PSU fan so it has access to fresh air.
b. If you have a modular PSU I suggest connecting the cables you need now.
c. Slide the PSU and the shield into the "PSU tunnel" and screw them together using 4x M3 screws
03-2.5" SSD/HDD and accessories installation
a. Screw your hard disk/disks to the sled
b. Slide the sled as shown in the picture below and secure it to the case with 2x M3 screws
c. Below the sled there are 10x holes with a diameter of 3mm (spaced 10mm from center to center) you can use to attach custom accessories to the bench.
04+ Build your PC
Install thermal paste, CPU cooler, GPU, etc. and enjoy your PC.
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Design notes:
The On-Off button, the usb and audio front IO you see in the pictures are from a really old case, I didn't include the files for those since they're not standard components and I couldn't find them online. You can make your own front IO panel and attach it to the M3 holes I left below the SSD sled.
I'd like to make some remixes to accomodate more form factors in the future (ATX, mATX motherboards, SFX power supplies, etc.). Feel free to remix, I'd love to see some custom remixes to fit your components! Post in the comments if you need help with that!
PC open frame case / test bench for mini ITX motherboard, ATX or SFX PSU
by Controforme · original on Printables ↗
Gadgets / Computers
♥ 153⬇ 1.2k🖨 7 prints
Print profiles
PSU_shield.stlDEFAULT
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Prints on: A1 mini 0.4PLA
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PSU_tunnel_-_cilinder_for_glue.stl
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PSU_tunnel_-_back.stl
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2.5in_SSD_sled.stl
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PSU_tunnel_-_front.stl
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ITX_base_-_bottom_v4.stl
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ITX_base_-_top_v4.stl
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Motherboard base split bottom.stl
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Motherboard base split top.stl
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PSU tunnel split back.stl
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PSU tunnel split front.stl
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PSU tunnel split glue guide.stl
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SFX 125x63 PSU Shield.stl
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PSU tunnel.stl
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SSDs sled.stl
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ATX PSU Shield.stl
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Motherboard base.stl
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