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Organizers & storage
IKEA Kallax insert divider for 33 cm cubes
A cross-shaped divider that slots into a single Kallax cube and splits the 33 by 33 cm opening into four compartments for scarves, yarn, cables or toys. The opening measures about 335 mm on each side and 390 mm deep, so the divider is 333 mm wide, 380 mm deep and 3 mm thick, made of two panels that cross in a half-lap slot and hold each other square without glue. Small 2 mm nubs on the ends grip the melamine walls. Each panel prints flat; a 250 mm bed handles them in two pieces joined by a dovetail, which the model can include. 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 |
|---|---|
| panel width (across cube opening) | 333 mm |
| panel depth (front-to-back) | 380 mm |
| panel thickness | 3 mm |
| dovetail neck width at base | 20 mm |
| dovetail wide end | 30 mm |
| dovetail length (insertion depth) | 15 mm |
| clearance for snug fit | 0.2 mm |
| nub height/protrusion | 2 mm |
| nub base width | 6 mm |
| distance from each end | 15 mm |
Example prompt
Design a cross divider for an IKEA Kallax cube opening 335 x 335 mm and 390 mm deep, made of two 3 mm panels 333 mm wide and 380 mm deep that interlock with a half-lap slot, each panel split at the middle with a dovetail joint for a 250 mm bed, with 2 mm grip nubs on the ends.
Fit notes
Cube dimensions drift a little between Kallax generations and the older Expedit, and the number of compartments you want depends on what goes in them. In SpeakCAD you type the measured opening and the layout, preview the divider in the browser, change to a three-row grid in the chat and download the STL.
Questions people ask about an IKEA Kallax insert divider for 33 cm cubes
A cross-shaped divider that slots into a single Kallax cube and splits the 33 by 33 cm opening into four compartments for scarves, yarn, cables or toys. The opening measures about 335 mm on each side and 390 mm deep, so the divider is 333 mm wide, 380 mm deep and 3 mm thick, made of two panels that cross in a half-lap slot and hold each other square without glue. Small 2 mm nubs on the ends grip the melamine walls. Each panel prints flat; a 250 mm bed handles them in two pieces joined by a dovetail, which the model can include.
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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