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PLA vs PETG vs ABS is the most common question in 3D printing. Tick what your part needs — heat resistance, UV resistance, flexibility, toughness or easy printing — to get a material recommendation, alongside the print and drying settings for each filament.
Quick recommendations
- Just starting out / decorative parts: PLA.
- Functional parts that see some heat or outdoor use: PETG.
- Car interiors and parts near motors: ABS or ASA with an enclosure.
- Outdoor parts in direct sun: ASA.
- Flexible parts: TPU, printed slowly with a direct-drive extruder.
Why drying matters
Most filaments absorb moisture from the air. Wet filament pops and strings, prints weaker and looks rough. Nylon and TPU are especially sensitive; store them sealed with desiccant and dry them before printing.
FAQ
Is PETG food safe?
Some PETG brands are certified food-contact safe as a material, but printed parts have layer lines that trap bacteria. Treat printed parts as single-use or for dry foods only.
Do I need an enclosure?
For ABS, ASA, nylon and polycarbonate, yes — they warp and crack in drafts. PLA, PETG and TPU print fine in the open.
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