H2S

The H2S is a fundamentally different machine from everything else in Bambu's lineup. The combination of 350°C hotend, 65°C actively heated chamber, and 1000 mm/s print speed opens up materials that were simply not viable on the A/P/X series: PA-CF, high-temp PA grades, PC blends, and other engineering polymers that need both high extrusion temperatures and sustained chamber temperatures.

At $1,249, it launched just $50 above the X1 Carbon (the X1C is discontinued since March 2026, superseded by the X2D). For that $50 more: faster print speeds, higher-temperature hotend, active heated chamber, and a larger build volume. The X1C's Lidar quality sensing was the only reason to pick it instead, and with the X1C out of the lineup that choice no longer applies to new purchases. The H2S is heavy (32 kg), consumes 1500W, and takes 25 minutes to pre-heat. For PLA and PETG it's overkill, but for engineering parts it's the right tool.

Pre-heat protocol: For engineering materials, set chamber target to 65°C and wait ~25 minutes before starting the print. Let the temperature stabilize for 5 minutes. Parts printed with a pre-heated chamber have consistently better adhesion.

Dry filament: PA-CF and PC are hygroscopic. Always dry filament before printing (80°C for 6+ hours). Moisture causes popping, stringing, and poor layer adhesion, even the best chamber won't fix wet filament.

Power: The H2S draws 1500W. Verify your circuit can handle this, especially if other equipment is on the same breaker.

Ethernet: The H2S supports wired Ethernet in addition to Wi-Fi, useful in workshop environments with poor Wi-Fi coverage.

H2S or X1C? H2S. The X1C is discontinued since March 2026 (superseded by the X2D), so it is no longer a new-purchase option. The H2S is faster, larger, higher temp, and has an active chamber; a used X1C only makes sense if Lidar quality sensing is specifically what you need.

H2S or H2D? H2S if single-material engineering parts or multi-color via AMS is sufficient. H2D if you need simultaneous dual-material printing (soluble supports, dual-material parts), LiDAR, or the higher-power 40W laser. The H2S also takes the optional 10W laser and cutting module.

H2S or P2S? P2S ($549) if your materials stop at ABS/ASA. H2S ($1,249) if you need PC, PA-CF, or the larger build volume.

Is 1000 mm/s usable? The rated maximum; real-world quality printing is around 400–600 mm/s. But the faster acceleration profile does meaningfully reduce print times on complex models compared to the P-series.