Bambu Lab H2D vs H2S: Large-Format and Dual-Nozzle Printing Explained

The H2D and H2S are Bambu Lab's flagship machines — the H-series — built for professionals, engineers, and serious makers who need large build volumes, high-temperature capability, and the stability to print demanding engineering materials. Both have a 350°C nozzle and a 65°C actively heated chamber. The decision between them comes down to one fundamental question: do you need two nozzles, or do you need the absolute largest single-nozzle build volume? This guide makes that choice clear.

What the H-Series Has in Common

Both machines share the capabilities that define the tier: a 350°C hotend (versus 300°C on the rest of the Bambu range), a 65°C actively heated chamber, a hardened steel nozzle for abrasive carbon- and glass-fibre filaments, servo-driven extrusion with real-time monitoring, and support for the full range of engineering materials — PA, PC, PPA-CF, PPS, and fibre-reinforced composites. Both reach 1000 mm/s. Both are large-format machines built around the same chassis. If your work involves engineering-grade filaments, either machine is capable; the difference is in architecture.

Side by Side

The H2S: The Largest Build Volume Bambu Makes

The H2S has a single 350°C nozzle and the biggest build volume in the entire Bambu range — 340×320×340 mm. Because it has only one nozzle, the full bed is always available; there is no shared-area compromise. This makes it the right machine when your priority is printing large parts in one piece: cosplay armour, fixtures, jigs, enclosures, RC fuselages, and multi-part assemblies that would otherwise need splitting and joining. It still handles multi-colour printing through the AMS 2 Pro. For most large-format engineering work, the H2S delivers the capability at a lower price than the H2D.

The H2D: Dual Nozzles and Multi-Process Manufacturing

The H2D is the flagship. Its two independent 350°C nozzles enable true dual-material printing — two different materials, or two colours, processed simultaneously without the purge waste of single-nozzle multi-colour systems. This is ideal for parts combining rigid and flexible materials, or for soluble support interfaces on complex engineering geometry. The dual-nozzle build volume is 300×320×325 mm (single-nozzle mode gives 325×320×325 mm).

Beyond printing, the H2D can be equipped with optional laser engraving and cutting modules (10W or 40W) and a pen-plotting module, turning it into a complete desktop manufacturing platform — print a part, then laser-engrave or cut components on the same machine. For a workshop that wants 3D printing, laser work, and cutting in one device, the H2D is unique in the Bambu range.

Which Should You Buy?

Choose the H2S if: your priority is the largest possible single-piece build volume, you print engineering materials, and you do not need two nozzles. It gives you the most printable space for the money and is the better value for pure large-format printing.

Choose the H2D if: you need dual-material printing (rigid + flexible, or soluble supports), or you want laser engraving, cutting, and plotting integrated into the same machine. It is the multi-process flagship for a complete manufacturing workflow.

For dual-material work in a more compact, lower-cost package, also consider the X2D — it offers dual nozzles in a smaller 256×256×260 mm format with a 300°C nozzle.

Available from Eolas Prints

Eolas Prints is an authorised Bambu Lab reseller based in Cantabria, Spain. Both the H2S and H2D are in stock and ship across Europe with EU warranty and professional support. We also offer installation and training for professional and B2B customers. Pricing is on each product page. Contact us to discuss your application.