3D Printable QR Code Generator

Turn any QR code into a 3D printable file

Most QR generators stop at a flat image. QR3D Maker goes further: it builds a real, print-ready 3D model of your QR code that you can make on any FDM 3D printer. Because a printed code only scans reliably when it has genuine contrast, the object is made of two colors — a base plate in one color and the raised code and text in another — and both are stored inside the file so your slicer assigns them to two filaments automatically.

Why print a QR code in 3D instead of on paper?

A paper QR fades, tears, warps in humid kitchens and looks temporary. A 3D printed QR is a permanent, tactile object your customers actually notice: a solid desk stand on the hostess counter, a keychain a conference guest keeps for months, a wall plaque next to a rental door. It survives coffee spills, sunlight and being picked up dozens of times a day. And unlike a laminated sign, you can reprint it in your brand colors instead of black and white — a matte navy base with a bright orange code reads instantly and looks like part of the space, not an afterthought stuck on with tape.

Why 3MF instead of STL?

An STL file only describes shape, not color. A 3MF file (the modern standard used by Bambu Studio, PrusaSlicer, Orca Slicer and Cura) stores the two colors right inside it. That is why the main download here is a single .3mf: open it and the base and the code are already on separate colors, with real contrast so any phone camera reads it. For older printers that only accept STL, there is a secondary download with two separate STL files and a short read-me — you load the base STL, add the code STL as a second object on top and assign each one a filament. Same result, one extra step.

Three ready-to-print objects

• Desk stand — an angled base that stands on a counter or table. Ideal for restaurant menus and "leave us a review" cards.
• Keychain — a compact tag with a ring hole, perfect for events, giveaways and personal links.
• Wall plaque — a flat plate with two hang holes for Wi-Fi codes in rentals, offices and shops.

Making sure it scans

Three things decide whether a 3D printed QR reads on the first try: contrast, module size and relief height. The tool warns you if the two colors are too similar to scan, if the code is lighter than the base (which some old phones dislike), and if each module would print smaller than about 1.5 mm — in which case you simply enlarge the object or shorten the link. Keep a light base with a dark code and you will get a crisp, dependable print every time. The raised code sits about 0.6–1 mm above the base by default; that shadow gap is what makes the pattern pop under overhead lighting even when the two filaments are close in tone.

Slicer setup tips: Bambu Studio, PrusaSlicer, Orca and Cura

If you print the 3MF, there is almost nothing to configure — the file arrives with two objects on two filaments and everything aligned. Load it in Bambu Studio or Orca Slicer and both filaments show up automatically; make sure your AMS or MMU slots match the two colors you picked. In PrusaSlicer the 3MF also imports both parts and their color assignment; just confirm the printer profile matches your machine. In Cura, open the 3MF and, if you are on a single-extruder printer, use the "pause at height" or "filament change" script at the exact Z where the code layer starts (the tool tells you that height in the download read-me).

Recommended print settings

These defaults give a scannable, clean result on almost any FDM printer, no supports needed:

• Layer height: 0.16–0.20 mm. Finer layers make the code edges crisper but do not help scanning.
• Infill: 15–20% for the base is plenty — it is already thick enough to stay flat.
• Supports: none. Every model is designed to sit flat on the bed with only shallow overhangs.
• Filament: matte PLA reads best under most lighting because glossy plastic bounces highlights that confuse the phone camera; PETG works too. Silk filament looks nice but can flare in direct sun.
• Base thickness: the default 2 mm base holds its shape; go thicker (3–4 mm) for large plaques so they do not warp on the wall.
• First layer: take your time with the first layer — a clean, flat base is what makes the raised code look sharp.

Once printed, test-scan with two or three different phones from about 20–30 cm before you install the object in its final spot. If your slicer preview shows both colors and you kept a strong contrast, it will scan; the physical print is only confirming what the design already promised.