ASA (Acrylonitrile Styrene Acrylate) is an ABS alternative with superior UV resistance, making it the best choice for outdoor functional parts.
Properties
- UV Resistance — Excellent, unlike ABS which yellows in sunlight
- Weather Resistance — Rain, heat, cold — ASA handles it all
- Strength — Similar to ABS, good mechanical properties
- Heat Resistance — Good (~100°C glass transition)
- Surface Finish — Smooth, matte appearance
Best Practices
- Enclosure required (same as ABS)
- Heated bed at 95-110°C
- Minimal part cooling fan
- Good ventilation required — produces fumes
- Similar print settings to ABS but slightly higher nozzle temp