Bambu Lab A1 Review: The Default First 3D Printer
A full-size, fully self-calibrating open printer that most beginners can run on day one. Where it beats an enclosed machine, and the recall history worth knowing.
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The hard part of 3D printing used to be the printer itself: levelling the bed, setting the nozzle height, tuning until the first layer stuck. The A1 does all of that for you before every print. That is the whole reason it is the default first printer.
What it does well
Calibration you never think about. Before each print it levels the bed, sets the Z-offset, measures vibration and compensates flow. A beginner’s first print is usually a good one, and that matters more than any spec.
Full-size volume. It prints a 256 mm cube, the same as Bambu’s enclosed P1S. The A1 mini is cheaper, but its 180 mm bed rules out a lot of workshop parts.
Colour later, if you want it. The optional AMS lite feeds four spools, so you can add multi-colour printing without buying a new printer.
Quiet. Bambu quotes 48 dB or less in silent mode. That is a maker figure, but reviewers agree it is quiet enough to share a room with.
What to know first
It is open. PLA, PETG and TPU print well on it. ABS and ASA need a warm, still enclosure to stop them warping, and give off fumes worth containing. See FDM vs resin and filament types explained.
The 2024 recall. Bambu, with the US CPSC, recalled A1 printers sold before 30 January 2024: the heatbed cable could be damaged and short. New stock is not affected. If you are buying used, confirm the replacement was done.
A closed ecosystem. In January 2025 Bambu added an authorisation layer that gates third-party software control. After a backlash it added an opt-in developer mode for LAN use. For most owners nothing changes. If you want a printer you can modify freely, this is not it.
Against the alternatives
The Ender-3 V3 SE costs less, but you level, tune and fettle it yourself. The P1S adds an enclosure for engineering filaments. The Creality K1C is an enclosed rival with a carbon-fibre-ready nozzle.
What works
- Calibrates itself before every print (bed level, Z-offset, vibration and flow), which removes the setup that puts most beginners off
- A 256 mm cube build volume, the same as Bambu's enclosed P1S, so it prints full-size parts and jigs
- Takes the optional AMS lite for four-colour printing without changing printers
- Quick-swap nozzle: one clip, no tools, so a clog or a nozzle change takes minutes
What doesn't
- Open frame, so it is a poor choice for ABS and ASA, which warp and smell without an enclosure
- Early units were recalled in 2024 over a heatbed cable that could short; check that a used one has had the fix
- Bambu's 2025 firmware put an authorisation layer in front of third-party control, so tinkerers get less freedom than on an open-source printer