PETG Settings for Bambu Lab A1
Recommended slicer settings for printing PETG on the Bambu Lab A1 (256 x 256 x 256 mm build volume, 500 mm/s max speed, direct drive extruder).
Slicer Configuration
Copy these values into your slicer (Cura, OrcaSlicer, PrusaSlicer, Bambu Studio)| Setting | Value | Range |
|---|---|---|
| Nozzle Temperature | 245°C | 230-250°C |
| Bed Temperature | 80°C | 80-90°C |
| First Layer Nozzle | 250°C | +5°C above normal |
| First Layer Bed | 85°C | +5°C above normal |
| Print Speed | 140 mm/s | 80-200 mm/s |
| First Layer Speed | 40 mm/s | 25-50% of normal |
| Wall Speed | 105 mm/s | 70-80% of normal |
| Travel Speed | 300 mm/s | 120-150% of print speed |
| Layer Height | 0.2mm | 0.12-0.28mm |
| Infill | 15-20% | 10-30% |
| Wall Count | 2-3 | Perimeters/shells |
| Top/Bottom Layers | 3-4 | Solid layers |
| Cooling Fan | 50% | From layer 2+ |
| Retraction Distance | 0.8-1.2 mm | Direct drive |
| Retraction Speed | 40 mm/s | Direct drive |
Before You Print
Print Quality Profiles
Three presets for common use cases with PETG on the Bambu Lab A1.
| Profile | Layer Height | Speed | Infill | Best For |
|---|---|---|---|---|
| Draft | 0.28mm | 200 mm/s | 10-15% | Rapid prototyping, test fits |
| Standard | 0.20mm | 140 mm/s | 15-20% | General purpose, everyday prints |
| Quality | 0.12mm | 80 mm/s | 20-30% | Miniatures, display pieces, fine detail |
Bed Adhesion
PETG bonds extremely well to smooth PEI sheets -- sometimes too well. Use a textured PEI sheet or apply a thin layer of glue stick as a release agent on smooth PEI to prevent damage. On glass beds, always use glue stick (PETG can pull glass chips off). Let the bed cool completely before removing prints.
Temperature Tuning Guide
Nozzle: 245°C
Range: 230-250°C. Printer max: 300°C.
- Poor layer adhesion? Increase +5°C
- Stringing or oozing? Decrease -5°C
- Print a temperature tower to find your exact sweet spot
Bed: 80°C
Range: 80-90°C. Printer max: 100°C.
- First layer lifting? Increase +5°C
- Elephant's foot? Decrease -5°C
- Let the bed fully preheat before starting
Troubleshooting PETG on Bambu Lab A1
Pro Tips for PETG
Dry your PETG before printing -- even a new spool left open overnight can absorb enough moisture to affect quality
Slow down the first layer to 15-20 mm/s for solid adhesion
Use a lower fan speed (30-50%) -- too much cooling weakens layer adhesion with PETG
If printing on smooth PEI, use glue stick as a release agent to prevent bed damage
PETG is an excellent all-around material once you dial in the settings
Support Settings
For prints requiring supports with PETG, use tree supports for easier removal and less scarring. Set a 0.15-0.2mm Z-distance between support and model. If you have a dual-extruder setup, consider PVA (for PLA/PETG) or HIPS (for ABS) as dedicated water/solvent-soluble support material.
Bambu Lab A1 Specs
| Build Volume | 256 x 256 x 256 mm |
| Max Speed | 500 mm/s |
| Max Nozzle Temp | 300°C |
| Max Bed Temp | 100°C |
| Extruder | Direct Drive |
PETG Properties
| Nozzle Range | 230-250°C |
| Bed Range | 80-90°C |
| Speed Range | 40-60 mm/s |
| Difficulty | beginner |
| Drying | 65°C / 7h |
| Enclosure | Not needed |
PETG at a Glance
Strengths
- Excellent all-around material for functional parts
- Good impact resistance (much better than PLA)
- Moderate heat resistance (softens ~80C)
- FDA-approved for food contact in raw form
- Good chemical resistance
- Semi-flexible (bends before breaking)
Weaknesses
- Prone to stringing
- Moderate moisture sensitivity
- Can bond too strongly to glass beds
- Lower fan speeds required (not great for overhangs)
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Try 3DSearch →Sources: Based on Bambu Lab Wiki (wiki.bambulab.com), community testing data, manufacturer recommended ranges. Values verified from manufacturer documentation and official slicer profiles.