Flex on Prusa MK4 / Core One family

official

Test on scrap first. Settings are starting points from the linked source. Dry hygroscopic filaments before printing.

Printer

Prusa MK4 / Core One family

Filament brand

Prusa / Prusament

Filament type

Flex

Slicer

PrusaSlicer

Nozzle size

0.4 mm

Nozzle temp

220-260 °C

Bed temp

40-85 °C

Notes

Prusa material guide Flex overview.

Source: Prusa Knowledge Base · 2026-10-01

Summarized from the linked source. Always test on scrap before production runs.