Bambu Lab A1 Filament Temperature Guide
The Bambu Lab A1 is a fast, well-tuned bed-slinger that handles most common filaments beautifully — as long as your temperatures match the material. Here are sensible nozzle and bed starting ranges for the A1's standard 0.4 mm hardened-steel-compatible hotend, plus notes on when to nudge each value.
Temperature ranges at a glance
These are starting points for the stock A1 hotend. The A1 is an open-frame printer with no heated enclosure, so high-warp materials like ABS and ASA need extra care. Bambu Studio's auto-calibration (flow dynamics and flow rate) runs before each print by default — let it.
| Material | Nozzle | Bed | Part cooling |
|---|---|---|---|
| PLA | 200–220 °C | 55–60 °C | 100% |
| PLA+ | 210–225 °C | 55–60 °C | 80–100% |
| PETG | 230–250 °C | 70–80 °C | 30–50% |
| TPU (95A) | 220–240 °C | 40–50 °C | 30–60% |
| ABS | 240–260 °C | 90–100 °C | 0–20% |
| ASA | 240–260 °C | 90–100 °C | 0–20% |
PLA and PLA+: the easy wins
PLA is the A1's home turf. Start at 210 °C nozzle and 60 °C bed with full cooling and you will get clean, fast prints. PLA+ blends run a touch hotter — around 215–220 °C — because the additives that make them tougher also raise the melting point slightly. If you see stringing on PLA, the spool is probably damp; if layers look rough, raise the nozzle 5 °C.
PETG: hotter nozzle, less fan
PETG wants more heat than PLA and far less cooling. Begin at 240 °C with the bed at 75 °C and the part-cooling fan around 40%. Too much fan is the number-one cause of weak, brittle PETG on the A1. PETG also bonds hard to the textured PEI plate, so lift parts only after the bed has cooled, and avoid a heavily squished first layer.
TPU: slow and steady
Flexible TPU prints well on the A1's direct-drive extruder, but keep speeds low — 20–40 mm/s — and use only light cooling. A nozzle around 230 °C with a 45 °C bed is a reliable start for 95A TPU. Skip the AMS lite for very soft filaments and feed from a spool holder to avoid jams.
ABS and ASA: possible, with caveats
Both materials need a hot nozzle (around 250 °C) and a hot bed (90–100 °C), with cooling turned almost all the way down so layers stay fused. The real challenge is the lack of an enclosure: heat escapes, corners curl, and tall prints crack. Keep parts small, add a brim, and shield the printer from drafts. For frequent ABS work, an enclosed machine is the better tool — but the A1 can manage small functional parts.
Let auto-calibration do its job
Bambu Studio runs flow dynamics calibration (the printer's version of pressure advance) and flow-rate calibration automatically. Leave these enabled, especially when switching filaments, and the A1 will compensate for differences between brands. For finicky spools, run a manual flow-rate and temperature calibration once and save the result to that filament profile.
When to adjust
- Stringing or blobs: lower the nozzle 5–10 °C and dry the filament.
- Weak, splitting layers: raise the nozzle 5–10 °C and reduce part cooling.
- Poor bed adhesion: clean the plate with isopropyl alcohol and raise the first-layer bed temp.
- Warping corners: reduce cooling, add a brim, and block drafts.
Every spool is a little different, so treat these ranges as the middle of the road and dial in from there. A five-minute temp tower per new filament is the single best habit for consistent results on the A1.
