Open-Frame PC Test Bench for 250 mm Beds
Created 4 days ago
Description
An open-frame PC test bench should stop the PSU, motherboard and SSD from shifting while you build; this one does it on a single 250 × 250 mm plate that fits a 256 × 256 mm printer bed. The base is 4 mm thick, and the whole bench prints as one piece in PLA.
Fit and print numbers
- Base plate: 250 × 250 × 4 mm; one-piece print.
- PSU socket: 140.4 × 86.4 mm pocket with 4 mm walls on three sides; rear bracket 150 mm tall with four ATX screw holes at 64 × 114 mm spacing, 4.2 mm diameter.
- Motherboard: four 25 mm-high standoffs with 2.8 mm pilot holes for M3, spaced 160 × 120 mm. This is not the standard mATX hole pattern, so check it against your board first; a full mATX board will overhang the plate.
- SSD: 72 mm-long slot with two 3 mm walls, 22 mm high, holds a 7 mm-thick 2.5-inch drive on its edge.
The layout is a compromise for a 250 mm bed: the PSU and board both need room, so the standoff spacing is fixed at 160 × 120 mm rather than a true mATX pattern. Print it in PLA if you want the base stiff without extra parts.
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