PEEK Settings for Prusa MK3
Recommended slicer settings for printing PEEK on the Prusa MK3 (250 x 210 x 210 mm build volume, 100 mm/s max speed, direct drive extruder).
Not Compatible
The Prusa MK3 has a max nozzle temperature of 300°C, which may be below the minimum recommended 370°C for PEEK. Printing may be possible at the lower end of the temperature range but results may be suboptimal. The max bed temperature of 120°C is below the recommended 130°C for PEEK. Adhesion may be poor without additional bed adhesion aids.
| Filament Nozzle Requirement | 370-420°C |
| Printer Max Nozzle | 300°C |
| Filament Bed Requirement | 130-160°C |
| Printer Max Bed | 120°C |
What to do instead
- Your printer's hotend maxes out at 300°C, but PEEK needs at least 370°C. No amount of tuning can overcome this hardware limitation.
- Your printer's bed maxes out at 120°C, but PEEK needs at least 130°C for reliable adhesion.
- Try a compatible filament for your Prusa MK3 — PLA, PETG, and ABS are good options.
- If you need PEEK specifically, you'll need a printer with an all-metal hotend rated for 370°C+ nozzle and 130°C+ heated bed.
PEEK Requirements
PEEK Properties
| Nozzle Range | 370-420°C |
| Bed Range | 130-160°C |
| Speed Range | 15-30 mm/s |
| Difficulty | advanced |
| Enclosure | Required |
| Drying | 150°C / 6h |
Prusa MK3 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 |
PEEK at a Glance
Strengths
- Heat resistance up to 250°C continuous
- Exceptional chemical resistance
- Aerospace and medical grade material
- Biocompatible grades available
Weaknesses
- Requires specialized printer (400°C+ hotend, heated enclosure)
- Extremely expensive (~$300-700/kg)
- Needs heated chamber at 120°C+
- Cannot be printed on consumer-grade machines
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Try 3DSearch →Sources: Based on Prusa Knowledge Base (help.prusa3d.com), community testing data, manufacturer recommended ranges. Values calculated from filament specifications and printer hardware limits.