Short answer
The Bambu A1 prints PLA at a 200 to 220 °C nozzle and a 50 to 60 °C bed, with full part cooling and a short direct-drive retraction. PLA is the easy filament, and the A1’s auxiliary fan and direct-drive extruder handle it with little tuning. Keep the filament dry and the first layer slow, and the A1 gives clean results at speed.
Starting PLA settings for the A1
These numbers suit a stock Bambu A1 with the direct-drive extruder and the stock 0.4 mm nozzle. The bed value tracks the Bambu PLA guide, which sets 55 °C, and the nozzle and fan values sit inside the Prusament PLA datasheet range of a 210 °C nozzle with a 10 °C window and full fan. The retraction baseline and the speed tuning are Marqilo starting points for the A1.
| Setting | Recommended | Why |
|---|---|---|
| Nozzle temp | 200 to 220 °C | 210 °C is a safe center. Move toward 220 °C at higher speeds so the A1 keeps up. |
| Bed temp | 50 to 60 °C | 55 °C gives a clean first layer on the textured PEI sheet, per the Bambu PLA guide. |
| Retraction | 0.6 to 1.0 mm | Per the Bambu PLA Basic datasheet (0.6 to 1.0 mm). Start at 0.6 mm on the direct-drive A1 and step toward 1.0 mm for any stringing. |
| Part cooling | 100% | Off or low for the first 2 to 3 layers, then 100 percent. PLA takes full cooling for crisp overhangs. |
| First layer | 210 °C, 55 °C bed, 30 mm/s | Slow and warm, so the first layer bonds before the bed speeds up. |
| Print speed | 80 to 200 mm/s | Marqilo starting point. The A1 prints PLA fast; slow the outer walls to 80 to 120 mm/s for finish. |
How to adjust PLA settings
Clean and warm the bed
Wipe the textured PEI with isopropyl alcohol and set it to 55 °C. A clean, warm sheet is most of PLA adhesion on the A1.
Set the temperatures
Nozzle to 210 °C and bed to 55 °C is a safe start that melts PLA clean and grips the sheet.
Run cooling low then full
Keep the fans off for the first 2 to 3 layers, then set them to 100 percent with the auxiliary fan on.
Tune retraction
Start at 0.6 mm. If fine strings appear, step toward 1.0 mm until they clear.
What goes wrong
Most failed PLA prints on the A1 trace to a dirty sheet and too little cooling. A greasy or cold bed lifts the corners, so clean the PEI and hold 55 °C. PLA run with the fans low past the first layers droops on overhangs, so push cooling to 100 percent. A nozzle that is too cold under-extrudes at speed, which clears when you lift it toward 220 °C. The PLA stringing guide covers the hairs in depth.
Frequently asked
What PLA nozzle temp for the Bambu A1?
Do I need the auxiliary fan for PLA on the A1?
How fast can the A1 print PLA?
For the material side, the PLA hub explains the filament in depth, and the filament storage guide covers keeping spools dry.
Related guides
Sources & methodology
4 citations · reviewed 2026-07-10- 01Bambu Lab PLA Usage Guide (wiki): PLA bed temperature and handlingaccessed 2026-06-29Tier 1
- 02Bambu Studio Wiki: print and material settingsaccessed 2026-06-29Tier 1
- 03Prusament PLA Technical Datasheet (TDS PDF): nozzle, bed, fan, and print speedaccessed 2026-06-29Tier 1
- 04Bambu Lab PLA Basic Technical Data Sheet (TDS V3.0): retraction 0.6 to 1.0 mm, nozzle 190 to 230 °Caccessed 2026-07-10Tier 1