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Enclosures & cases
Safety cover for an open-frame 12 V power supply
A vented cover that fits over an open-frame 12 V 5 A switching power supply so the mains terminals are no longer exposed on a bench or inside a project. It is a five-sided box that screws into the supply's existing mounting holes, with 2 mm walls, 1 mm clearance to the chassis, a removable flap over the screw terminals and generous slot vents on top and sides. A strain relief notch guides the mains lead and stops it pulling on the terminals. Open the ready-made model free, resize it on your phone or computer, then download a print-ready STL, 3MF or G-code sliced for your printer, free.Opening the ready-made model and downloading it as STL or 3MF are free, no card; AI changes use credits, from Maker at $7.99 a month.No printer? We print this part and ship it to your door. See its priceUpdated
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Adjust
Change its numbers in the viewer for free, or ask the AI in the chat: wall thickness, hole size, the thing it clips onto. AI changes use 2 credits per request (1 for a quick edit, 3 for a redesign), paid with a plan from Maker at $7.99 a month.3Print
Download a watertight STL or 3MF free, with your numbers and hand edits, or G-code sliced for your printer at the same price. After an AI change the download is included in every plan (4 credits without one).
Dimensions of the ready-made model (editable)
| Parameter | Value |
|---|---|
| clearance per side | 1 mm |
| extra flange width beyond box | 8 mm |
Example prompt
Create a vented cover for an open-frame power supply 110x78x36 mm with mounting holes at 98x66 mm. Five-sided box, 2 mm walls, 1 mm clearance, four 3.2 mm holes in the flange. Removable terminal flap 60x25 mm, 8 mm strain relief notch, 3 mm vents on top and sides.
Fit notes
Open-frame supplies have odd hole spacings and terminal positions that a generic cover will not respect, whereas SpeakCAD builds the cover around the measurements you give. Preview in the browser, and ask for a rocker switch cut-out, a fuse holder hole or a fan opening next.
Questions people ask about a safety cover for an open-frame 12 V power supply
A vented cover that fits over an open-frame 12 V 5 A switching power supply so the mains terminals are no longer exposed on a bench or inside a project. It is a five-sided box that screws into the supply's existing mounting holes, with 2 mm walls, 1 mm clearance to the chassis, a removable flap over the screw terminals and generous slot vents on top and sides. A strain relief notch guides the mains lead and stops it pulling on the terminals.
Click Open it free on this page and create a free account (no card): the ready-made model opens in your browser, on your phone or computer, nothing to install. Change its numbers in the viewer for free and download a watertight STL or 3MF free, or G-code sliced for your printer at the same price. An AI change in the chat uses 2 credits per request (3 for a redesign), and the download after it is included in every plan (4 credits without one). Start with Maker: 50 credits a month for $7.99, cancel anytime.
On this page: open the ready-made model free in a SpeakCAD account (no card), change any dimension in the viewer, then download the STL or 3MF free, or G-code sliced for your printer at the same price.
A shared STL is modelled for someone else's measurements. Here you open the ready-made model free, change it to your measurements in the viewer, then download a file sized for the part you actually own, free as STL or 3MF.
Yes. SpeakCAD slices the part on its servers with OrcaSlicer and your printer's official profile (380+ printers, including Bambu Lab, Prusa, Creality and Elegoo), and you download the G-code (a sliced .gcode.3mf for Bambu Lab printers). G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Pick your printer on the printers page to see its profile.
No. SpeakCAD runs in the browser on your phone or computer: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL, 3MF or sliced G-code.
Print it your way
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