PLA Settings for Prusa MK3S
Recommended slicer settings for printing PLA on the Prusa MK3S (250 x 210 x 210 mm build volume, 100 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 | 215°C | 190-220°C |
| Bed Temperature | 60°C | 50-60°C |
| First Layer Nozzle | 220°C | +5°C above normal |
| First Layer Bed | 65°C | +5°C above normal |
| Print Speed | 50 mm/s | 40-60 mm/s |
| First Layer Speed | 20 mm/s | 25-50% of normal |
| Wall Speed | 38 mm/s | 70-80% of normal |
| Travel Speed | 90 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 | 100% | 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 PLA on the Prusa MK3S.
| Profile | Layer Height | Speed | Infill | Best For |
|---|---|---|---|---|
| Draft | 0.28mm | 60 mm/s | 10-15% | Rapid prototyping, test fits |
| Standard | 0.20mm | 50 mm/s | 15-20% | General purpose, everyday prints |
| Quality | 0.12mm | 40 mm/s | 20-30% | Miniatures, display pieces, fine detail |
Bed Adhesion
PLA adheres well to PEI sheets (smooth or textured) without any adhesive. If using a glass bed, apply a thin layer of glue stick or hairspray. Clean the bed with isopropyl alcohol (IPA) before each print for consistent adhesion.
Temperature Tuning Guide
Nozzle: 215°C
Range: 190-220°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: 60°C
Range: 50-60°C. Printer max: 120°C.
- First layer lifting? Increase +5°C
- Elephant's foot? Decrease -5°C
- Let the bed fully preheat before starting
Troubleshooting PLA on Prusa MK3S
Pro Tips for PLA
Print a temperature tower to find the sweet spot for your specific PLA brand
Store filament in an airtight container with desiccant when not in use
Clean the bed with IPA before every print for consistent adhesion
Use 100% cooling fan from layer 2 onward for best overhangs and bridging
PLA is great for prototyping but avoid leaving prints in hot cars or direct sunlight
Support Settings
For prints requiring supports with PLA, 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.
Prusa MK3S Specs
| Build Volume | 250 x 210 x 210 mm |
| Max Speed | 100 mm/s |
| Max Nozzle Temp | 300°C |
| Max Bed Temp | 120°C |
| Extruder | Direct Drive |
PLA Properties
| Nozzle Range | 190-220°C |
| Bed Range | 50-60°C |
| Speed Range | 40-60 mm/s |
| Difficulty | beginner |
| Drying | Not required |
| Enclosure | Not needed |
PLA at a Glance
Strengths
- Easiest filament to print with
- No heated bed strictly required (helps though)
- Wide range of colors available
- Low warping
- Biodegradable (derived from corn starch)
- Good tensile strength (47-60 MPa)
Weaknesses
- Low heat resistance (softens at 55-60C)
- Brittle under impact
- Poor UV/outdoor resistance
- Not food-safe without coating
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Try 3DSearch →Sources: Based on Prusa Knowledge Base (help.prusa3d.com), community testing data, manufacturer recommended ranges. Values verified from manufacturer documentation and official slicer profiles.