Which filament is best for beginners?

PLA is the best choice for beginners. It prints at lower temperatures, doesn't require a heated bed or enclosure, produces minimal warping, and has almost no odor. Once you're comfortable with PLA, you can experiment with PETG for stronger parts.

Is PETG stronger than PLA?

Yes, PETG is significantly stronger and more flexible than PLA. It has better impact resistance and layer adhesion. However, PLA is stiffer, which can be an advantage for certain applications like decorative items or prototypes.

Why does ABS smell so bad?

ABS releases styrene fumes when heated, which have a strong chemical smell and can be harmful with prolonged exposure. This is why ABS requires good ventilation or an enclosure with a filter. PLA and PETG have minimal to no odor.

Can I use PETG without an enclosure?

Yes! Unlike ABS, PETG doesn't require an enclosure. It has minimal warping and good temperature stability. A heated bed (60-80°C) is recommended but not always necessary for smaller prints.

Which filament is food-safe?

None of these filaments are truly food-safe for repeated use. While PLA is made from plant-based materials, the layer lines harbor bacteria. For food contact, you'd need food-safe coatings or single-use applications. PETG is used in food packaging industrially but FDM prints aren't certified food-safe.

What temperature should I print each filament at?

PLA: 190-220°C nozzle, 0-60°C bed. PETG: 220-250°C nozzle, 70-90°C bed. ABS: 220-250°C nozzle, 90-110°C bed. Always check your specific filament brand's recommendations.

PLA vs PETG vs ABS: Which 3D Printing Filament Should You Use?

You’ve got your new 3D printer set up, printed a few test cubes, and now you’re staring at spools of filament wondering: “What’s the difference between all these materials?”

The short answer: PLA for easy prints, PETG for functional parts, ABS only if you really need heat resistance.

The long answer involves trade-offs between ease of printing, strength, flexibility, and environmental factors. Let’s break it down so you can pick the right filament for your next project.

Quick Comparison Table

Property	PLA	PETG	ABS
Ease of Printing	⭐⭐⭐⭐⭐ Easiest	⭐⭐⭐⭐ Easy	⭐⭐ Difficult
Toughness	⭐⭐⭐ Moderate	⭐⭐⭐⭐ Strong	⭐⭐⭐⭐⭐ Toughest
Flexibility	⭐⭐ Brittle	⭐⭐⭐⭐ Flexible	⭐⭐⭐ Moderate
Heat Resistance	⭐⭐ ~60°C	⭐⭐⭐ ~80°C	⭐⭐⭐⭐ ~100°C
Warping	Minimal	Low	High
Odor	None	Minimal	Strong
Enclosure Needed	No	No	Yes
Price (avg)	$18-25/kg	$22-28/kg	$20-25/kg
Best For	Decorative, Prototypes	Functional Parts	Heat-resistant Parts

PLA: The Beginner’s Best Friend

PLA (Polylactic Acid) is made from plant-based materials like corn starch or sugarcane. It’s the most popular filament for good reason: it just works.

Why Choose PLA

Easiest to print — Low temperatures, minimal warping, works on any printer
No heated bed required — Though it helps with adhesion
No enclosure needed — Print in any room
Virtually no odor — Safe for home use without ventilation
Wide color selection — Every color and finish imaginable
Cheapest option — Often $18-22/kg for quality brands

PLA’s Limitations

Brittle under stress — Snaps rather than bends
Low heat resistance (~60°C) — Will deform in a hot car or near heat sources
Degrades in sunlight — Not great for outdoor use long-term
Difficult to post-process — Can’t be acetone-smoothed like ABS

Best Uses for PLA

Decorative items and figurines
Prototypes and test prints
Cosplay props (with coating)
Desk organizers and household items
Educational projects — check out 10 things to 3D print first
Anything that won’t see heat or stress

Recommended PLA Brands

Bambu Lab PLA Basic — Excellent quality, consistent results
Polymaker PolyLite PLA — Wide color range, reliable
Hatchbox PLA — Budget-friendly, good performance
Prusament PLA — Premium quality, tight tolerances

PETG: The Versatile Middle Ground

PETG (Polyethylene Terephthalate Glycol) is the same family of plastic used in water bottles. It combines the ease of PLA with strength closer to ABS.

Why Choose PETG

Strong and flexible — Bends before breaking
Excellent layer adhesion — Parts don’t delaminate
Good chemical resistance — Handles oils, solvents better than PLA
Higher heat resistance (~80°C) — Survives warm environments
No enclosure needed — Prints reliably in open air
Low warping — Much easier than ABS

PETG’s Limitations

Stringing — More prone to fine strings between parts
Slightly harder to dial in — Needs proper temperature tuning
Scratches easily — Softer surface than PLA
Hygroscopic — Absorbs moisture, needs dry storage
Sticks TOO well — Can damage build surfaces if not careful

Best Uses for PETG

Functional mechanical parts
Phone cases and protective gear
Outdoor items (UV-resistant versions)
Parts that need flexibility
Tool holders and brackets
Anything that might get dropped

Recommended PETG Brands

Prusament PETG — Benchmark quality
Overture PETG — Great value
eSUN PETG — Consistent performer (note: lower Tg ~60°C than typical PETG)
Polymaker PETG — Wide color selection, updated formula

PETG Print Settings Tips

Nozzle: 230-245°C (start at 235°C)
Bed: 70-90°C (80°C is a good starting point)
Speed: 40-60mm/s (slower than PLA)
Cooling: 30-50% (less than PLA)
Retraction: Increase by 20% vs PLA
First Layer: Print slow (20mm/s) and squish it

Pro tip: Use a glue stick or painter’s tape. PETG bonds SO well to glass/PEI that it can rip chunks off your bed. A release agent prevents this.

ABS: The Industrial Standard (But Do You Need It?)

ABS (Acrylonitrile Butadiene Styrene) is the same plastic as LEGO bricks. It was the original 3D printing material and is still used in professional/industrial settings.

Why Choose ABS

Highest strength — Tough, impact-resistant
Best heat resistance (~100°C) — Survives hot environments
Can be acetone-smoothed — Professional finish possible
Excellent machinability — Can be drilled, sanded, painted
Long-term durability — Resists degradation better than PLA in most environments

ABS’s Serious Limitations

Requires enclosure — Warps badly without stable temperature
Toxic fumes — Needs ventilation, shouldn’t breathe it
Strong odor — Smells like burning plastic
High warping — Corners lift, layers crack (see adhesion fixes)
Needs high bed temps (100°C+) — Not all printers support this
Steep learning curve — Many failed prints before success

Best Uses for ABS

Automotive parts (under-hood components)
Electronics enclosures
Parts near heat sources
Professional prototypes requiring post-processing
Items that need acetone smoothing

Should You Bother with ABS?

Honest answer: Probably not.

Unless you specifically need:

Heat resistance above 80°C
Acetone smoothing capability
Maximum impact strength

…then PETG will serve you better with 10% of the hassle. ASA (a UV-stable ABS variant) is worth considering if you need ABS properties for outdoor use. For a deeper look at printing technologies, see our FDM vs Resin comparison.

Material Selection Flowchart

Ask yourself these questions:

Is it decorative only? → PLA
Does it need strength/flexibility? → PETG
Will it be in a hot car or near heat?
- Under 80°C → PETG
- Over 80°C → ABS (or ASA)
Is it a prototype/test print? → PLA
Will it be outdoors long-term? → ASA or UV-stable PETG
Do you have an enclosure + ventilation? → ABS is an option
None of the above? → PLA (it’s just easier)

Print Settings Comparison

Setting	PLA	PETG	ABS
Nozzle Temp	190-220°C	220-250°C	220-250°C
Bed Temp	0-60°C	70-90°C	90-110°C
Print Speed	50-80mm/s	40-60mm/s	40-60mm/s
Cooling Fan	100%	30-50%	0-20%
Enclosure	Not needed	Not needed	Required
Bed Surface	PEI, Glass, BuildTak	PEI + Glue, Glass	Kapton, ABS Slurry

The Two-Filament Strategy

Here’s a secret most experienced makers know: You only need two filaments.

Keep on hand:

PLA — For quick prints, prototypes, decorative items
PETG — For anything functional

That’s it. This covers 95% of hobbyist use cases. You can explore specialty filaments (TPU, CF-Nylon, ASA) later when specific projects demand them.

Don’t hoard filament. It absorbs moisture and degrades. Buy what you need for current projects, store it properly, and restock as needed. Need a printer first? Check our best 3D printers under $300.

Storage and Handling

All three filaments are hygroscopic (absorb moisture from air), but to different degrees:

Filament	Moisture Sensitivity	Storage Requirement
PLA	Low-Medium	Sealed bag with desiccant
PETG	High	Dry box, use within 2-3 weeks once opened
ABS	Low-Medium	Sealed bag, dry before printing if issues

Signs of wet filament:

Popping/sizzling during printing
Rough surface texture
Stringing worse than usual
Poor layer adhesion

Fix: Dry in a food dehydrator or filament dryer — PLA at 45-50°C, PETG at 55-70°C, ABS at 60-80°C — for 4-6 hours.

Conclusion: Just Start with PLA

If you’re new to 3D printing, here’s my honest advice:

Start with PLA — Learn your printer without fighting the material. Dial in your slicer settings first
Graduate to PETG — When you need stronger functional parts
Skip ABS — Unless you have a specific need AND an enclosed printer with ventilation

The best filament is the one you can actually print successfully. Master PLA first, then expand your material knowledge as projects demand it.

Now go print something. That spool isn’t going to use itself.

Looking for project ideas? Check out What Should I 3D Print First? or browse Best Sites for Free 3D Models. Need help dialing in your settings? Read Cura Settings for Beginners. For all our 3D printing content, see the 3D Printing Guide.