Filament library

ABS print settings

The old-school engineering plastic — tough, but it makes you work for it.

ABS is the plastic of LEGO bricks and car interiors: impact-tough, heat-resistant past 90 °C, sandable, and glueable with acetone. For decades it was the functional filament — and it still works — but it demands an enclosure, ventilation, and patience with warping.

Honest advice for beginners: unless you specifically need acetone smoothing or its exact properties, ASA does everything ABS does with better UV resistance and slightly less drama, and PETG covers most 'tough part' needs with none of it. ABS is a choice you make for a reason.

Difficulty

Advanced

Best for

High-heat functional parts, automotive interior pieces, parts you'll acetone-smooth or glue.

Skip it for

Open-frame printers, poorly ventilated rooms, first-year printing.

Starting settings

Nozzle temperature240–260 °C
Bed temperature90–110 °C
Print speed40–80 mm/s
Cooling fan0–20% — cooling is the enemy of ABS layer bonding
EnclosureRequired — open-air ABS warps and cracks

Drying

60 °C for 4–6 h — Moderately thirsty — dry when layers look rough or adhesion drops.

New to drying? Read how to dry filament first.

Bed adhesion

Needs a hot bed and a draft-free enclosure more than any magic surface. Textured PEI at 100 °C works; large parts still benefit from a brim. Warping is a temperature-stability problem, not a glue problem.

Mistakes to skip

  • • Printing ABS on an open-frame printer and blaming the filament for corners lifting off the bed.
  • • Running it in a bedroom — ABS fumes (styrene) are the ones the ventilation warnings exist for.
  • • Using ABS out of habit when ASA or PETG would do the same job with less grief.

Common questions

Do I really need an enclosure for ABS?

For anything bigger than a few centimeters, yes. ABS shrinks as it cools; in open air the lower layers cool and contract while upper layers are still hot, and the part curls off the bed or cracks between layers. The enclosure keeps the whole print warm until the end.

Are ABS fumes dangerous?

ABS emits styrene and ultrafine particles while printing — the combination behind the standard advice: enclosed printer, ventilated room, don't sit next to it for hours. An enclosure with a filter helps; a window helps more. Occasional prints in a living space are the wrong habit.

ABS or ASA — which should I pick?

ASA, in most cases. It matches ABS on toughness and temperature, adds genuine UV resistance (ABS yellows and gets brittle in sunlight), and warps slightly less. ABS keeps two advantages: it's cheaper, and acetone vapor smoothing works best on it.

Not sure ABS is the right call for your project? TheFilament Pickerdecides in five questions — and thecost calculatortells you what each print costs.