What is annealing of 3D prints?
Annealing = heat treatment of a 3D print. We heat the print to a temperature just below Tg for a few hours. Result: 2-10× higher strength.
Why annealing
3D print has amorphous crystals of plastic. Annealing enables recrystallization - plastic arranges into stronger structure.
Temperatures and times
- PLA: 80-100 °C, 1-2 h
- PETG: 80-100 °C, 2-3 h
- Nylon: 80-120 °C, 3-6 h
- PC: 130-150 °C, 4-8 h
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