Choosing the wrong material is the #1 beginner mistake. This guide breaks down every common FDM filament so you pick the right one every time.

## PLA — The Beginner's Best Friend **Pros**: Easy to print, low warp, biodegradable, huge color range, cheapest. **Cons**: Brittle, low heat resistance (softens ~55°C), not UV stable. **Best for**: Decorative items, prototypes, cosplay props, household objects not exposed to heat. **Settings**: 190–220°C nozzle, 55–60°C bed. ## PETG — The Versatile Middle Ground **Pros**: Stronger than PLA, food-safe grades available, slight flexibility, UV stable. **Cons**: Stringy, sticks aggressively to PEI (use release agent), needs slower speeds. **Best for**: Mechanical parts, outdoor use, food containers, water-resistant applications. **Settings**: 230–250°C nozzle, 70–85°C bed. ## ABS — The Classic Engineering Plastic **Pros**: High heat resistance (~100°C), impact resistant, sandable, acetone-smoothable. **Cons**: Warps badly without enclosure, fumes, needs high bed temp. **Best for**: Automotive parts, electronics enclosures, tools exposed to heat. **Settings**: 230–250°C nozzle, 100–110°C bed, fully enclosed printer. ## ASA — Outdoor ABS **Pros**: Same strength as ABS with excellent UV resistance. Doesn't yellow. **Cons**: Same printing challenges as ABS. **Best for**: Outdoor signs, garden equipment, automotive exterior. **Settings**: 240–260°C nozzle, 90–110°C bed. ## TPU — Flexible Filament **Pros**: Rubber-like, impact absorbent, abrasion resistant. **Cons**: Slow print speeds, bowden tube setups struggle. **Best for**: Phone cases, gaskets, wheels, vibration dampeners. **Settings**: 220–240°C nozzle, 40–60°C bed, direct drive extruder recommended. ## PA (Nylon) — Engineering Grade **Pros**: High strength, chemical resistance, low friction. **Cons**: Absorbs moisture (must dry before printing), requires high temps. **Best for**: Gears, living hinges, functional mechanical parts. **Settings**: 250–280°C nozzle, 70–90°C bed, dry filament only. ## Quick Selection Chart | Need | Use | |------|-----| | First print | PLA | | Outdoor use | ASA | | Mechanical part | PETG or ABS | | Flexible part | TPU | | High-temp part | ABS or Nylon | | Gears/bearings | Nylon or POM |

FDM Materials Guide: PLA, PETG, ABS, ASA, and More Explained