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Enclosures & cases
Case for an LM2596 buck converter module
A tidy shell for the common 43 x 21 mm LM2596 step-down module, covering the exposed inductor and trimmer while leaving the input and output terminals reachable through end slots. The module has two 3 mm holes 30 mm apart on its diagonal, so the base uses two posts there plus rails on the long sides; walls are 1.6 mm, clearance 0.5 mm and internal height 16 mm to clear the capacitors. A 4 mm hole in the lid above the trim pot lets you adjust voltage without opening the case. 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 around board | 0.5 mm |
| wall thickness | 1.6 mm |
| internal cavity height (base floor to lid underside) | 16 mm |
| base floor thickness | 1.2 mm |
| lid top thickness | 1.2 mm |
Example prompt
Create a two-part case for an LM2596 buck converter 43x21x14 mm with two 3 mm holes 30 mm apart. Base 1.6 mm walls, 0.5 mm clearance, 16 mm internal height, two 2.8 mm posts. Wire slots 10x6 mm at each end. Snap lid with a 4 mm trimmer hole.
Fit notes
Buck modules differ in component height and terminal type, and SpeakCAD sizes the cavity and slots from your board. Preview the case in the browser, then ask for a voltmeter window, a wall tab or a snap lid rather than screws.
Questions people ask about a case for an LM2596 buck converter module
A tidy shell for the common 43 x 21 mm LM2596 step-down module, covering the exposed inductor and trimmer while leaving the input and output terminals reachable through end slots. The module has two 3 mm holes 30 mm apart on its diagonal, so the base uses two posts there plus rails on the long sides; walls are 1.6 mm, clearance 0.5 mm and internal height 16 mm to clear the capacitors. A 4 mm hole in the lid above the trim pot lets you adjust voltage without opening the case.
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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