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Enclosures & cases
Screw-lid enclosure for an 80 x 50 mm PCB
A general purpose electronics box for a custom 80 x 50 mm circuit board, with four corner posts, a screw-down lid and blank walls you can specify openings in up front. The cavity is 82 x 52 mm for 1 mm of clearance, walls are 2.5 mm, and the lid seats on a 1.5 mm recessed ledge so it sits flush. Four 4 mm pockets for M3 heat-set inserts in the corner pillars accept the lid screws, and 1 mm fillets on the outside edges make it feel finished. 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 |
|---|---|
| holes inset from PCB corners | 3 mm |
| wall thickness | 2.5 mm |
| outer fillet radius | 1 mm |
| standoff outer diameter | 7 mm |
| standoff screw hole (self-tap for PCB screw) | 2.5 mm |
| lid ledge height | 1.5 mm |
| ledge shelf width | 1.5 mm |
| lid thickness | 2.2 mm |
| heat-set insert hole diameter | 4.2 mm |
| inset from outer wall for insert pockets | 6 mm |
| M3 clearance hole in lid | 3.4 mm |
Example prompt
Create an enclosure for an 80x50 mm PCB with holes 3 mm from each corner. Inner cavity 82x52x25 mm, 2.5 mm walls, 1 mm outer fillets. Four 3 mm standoffs with 2.5 mm holes. Lid on a 1.5 mm ledge, fixed by four M3 screws into heat-set insert pockets.
Fit notes
A printed box only helps when the posts line up with your board's holes, and that is precisely what you tell SpeakCAD. Provide the PCB size, hole positions and connectors that need openings, preview the enclosure, and adjust cavity height or add a cable gland hole with a follow-up.
Questions people ask about a screw-lid enclosure for an 80 x 50 mm PCB
A general purpose electronics box for a custom 80 x 50 mm circuit board, with four corner posts, a screw-down lid and blank walls you can specify openings in up front. The cavity is 82 x 52 mm for 1 mm of clearance, walls are 2.5 mm, and the lid seats on a 1.5 mm recessed ledge so it sits flush. Four 4 mm pockets for M3 heat-set inserts in the corner pillars accept the lid screws, and 1 mm fillets on the outside edges make it feel finished.
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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