3D printing materials
PLA vs PETG vs ABS for Maker Projects
Updated June 11, 2026
Pick the filament after you know the part's job. PLA is the stiff, precise, easy one; PETG is the tough, slightly soft one; ABS (and its sun-proof sibling ASA) is the heat-resistant one that demands an enclosure. Here's the decision in one table, then the judgment calls.
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The one table
| PLA | PETG | ABS / ASA | |
|---|---|---|---|
| Printing difficulty | Easiest — open frame, cold room, fine | Easy-ish — strings, sticks too well to PEI | Hard — wants an enclosure; warps and cracks without one |
| Stiffness / detail | Stiffest, crispest detail, best bridging | Softer corners, slight flex | Good, slightly soft detail |
| Toughness (impact) | Brittle — snaps | Tough — bends, survives drops | Tough, machinable, sandable |
| Heat tolerance | Sags ~55–60 °C (a parked car kills it) | OK to ~75–80 °C | Fine to ~95–100 °C |
| Outdoor / UV | Poor | Good (clear PETG yellows) | ASA: excellent. ABS: good but fades |
| Fumes | Mild, sweet | Mild | Real — styrene; ventilate the enclosure |
| Typical cost (1 kg, 2026) | $13–$22 | $15–$25 | $16–$28 |
Part-first examples
- Jigs, fixtures, drill guides → PLA. Stiffness is the spec for accuracy-critical jigs, and shop-interior temps are fine.
- Printer/CNC mods near motors or hotends → PETG minimum, ABS near real heat. PLA brackets above a stepper slowly become modern art.
- Anything living in a car, garage ceiling, or sunny window → PETG floor, ASA preferred. This is the most common 'why did my part droop' postmortem.
- Enclosures with heat-set inserts and screws → PETG or ABS; PLA creeps under sustained screw tension in warm spots.
- High-detail display or dimensional prototypes → PLA; nothing else prints corners and bridges as cleanly.
- Parts you'll sand, glue, or acetone-smooth → ABS; it post-processes like a real material.
The judgment calls
PLA vs PETG for general shop parts: default PLA until the part flexes, snaps, or warms — brittle failure is PLA's tell. The moment a part's failure would pinch, drop, or strand something, PETG's bend-don't-break behavior is worth its stringing.
ABS vs ASA: same printing demands, but ASA adds UV stability for a dollar or two more. In 2026 there are few reasons to choose ABS over ASA except acetone-smoothing tradition and price on bulk spools.
The dark horse: 'PLA Plus / Pro' blends split the PLA–PETG difference (tougher than PLA, prints like PLA) and are the right answer for a lot of shop hardware. Just don't expect them to fix heat.
Spools and gear to compare
PLA, name-brand 1.75 mm
Buy boring, consistent PLA from one brand for jigs and calibration — consistency beats exotic blends for shop work.
See options on Amazon →PETG, 1.75 mm
The functional-parts workhorse: brackets, clips, outdoor-ish parts, insert-heavy assemblies.
See options on Amazon →ASA for outdoor parts
If anything you print sees sun, one spool of ASA replaces a season of re-printing sagged PETG.
See options on Amazon →Filament dryer box
Feeds the printer while drying — the upgrade that makes PETG stop stringing and ABS stop popping.
See options on Amazon →Frequently asked questions
Is PETG stronger than PLA?
Depends on the load. PLA is stiffer and often higher in tensile strength; PETG wins decisively on impact and fatigue — it bends where PLA snaps. For a clip or anything that takes shocks, PETG. For a rigid jig, PLA.
Can I print ABS without an enclosure?
Small parts on a draft-free printer with a 100 °C bed, sometimes. Anything larger warps off the bed or splits between layers as it cools unevenly. A cheap tent-style enclosure (or a garbage-bag draft shield, honestly) changes ABS from gamble to routine — just ventilate, because styrene fumes are real.
What filament for parts that touch food?
Treat home prints as not-food-safe regardless of filament: layer grooves harbor bacteria and nozzles shed brass. For coasters and trays it doesn't matter; for actual food contact, use a food-safe epoxy coating or make the part from something else.