ATX basic open pc case / test bench

by Printkaas · Gadget

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-The minimum required for the ATX tray are models Core and IO to hold the motherboard and pci cards (6 motherboard screws, or with the extensions, 9 motherboard screws).
-8 total models snap-fitted and then secured with a total of 25 size M3x12mm( or similar) nuts and bolts (phillips head recommended).
-Optional stand for using the tray in upright position.

The motherboard and pci cards can be directly screwed onto the tray stands/holes with generic motherboard screws.

The best print-result for me was to print without changing orientation and using a 0.4mm nozzle for the snap-fitting connections.
The taller models have 1mm horizontal support beams to be used with tree supports and are to be cut away.
-Models are max 18.2cm in length

I suggest cutting out one of the pci-slot beams if its in the way of inserting a thick hmdi plug.

03-30-2026 - v1.2 reverted small added spacing to now true dimensions.
02-27-2026 - added 3 extra screwholes on the extensions to actually mak

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