Home/PLA vs PETG

PLA vs PETG: which to use.

Pick the wrong filament and the part fails. Pick the right one and it works for years. PLA and PETG cover most of what hobbyists print. This page shows you which to use for every situation.

SIDE BY SIDE

Pick the right material in under a minute.

PropertyPLAPETG

Print temp190-220°C230-250°C

Bed temp45-60°C (or none)70-85°C

Enclosure neededNoNo

Heat resistanceLow (~60°C)Moderate (~80°C)

Layer adhesionGoodExcellent

UV resistancePoor (yellows)Moderate

FlexibilityBrittleSemi-flexible

Stringing tendencyLowHigher

Ease of printVery easyModerate

USE PLA WHEN

Use PLA when heat and strength do not matter.

PLA works well for anything that stays indoors and stays cool. It prints at the lowest temps, requires no heated bed, and forgives almost every tuning mistake. That makes it ideal for learning a new printer.

Indoor decorative prints, models, and figures.

Rapid prototypes where strength does not matter.

Anything that will not see heat above 60°C. Leave PLA in a hot car and it warps.

Dialing in a new printer. PLA is the most forgiving material available.

USE PETG WHEN

Switch to PETG when the part has a job to do.

PETG is the step-up material for parts that actually need to hold up. It handles more stress, more heat, and more flex than PLA, without needing an enclosure.

Functional parts that need to hold together under stress: brackets, clips, mounts.

Anything that might get warm: engine bay accessories, outdoor brackets.

Snap-fit parts that need to flex without snapping.

Food container lids. Check that your brand is food-safe certified. Not all PETG is.

PETG · COMMON ISSUES

Fix these three PETG issues before you waste a spool.

Sticking too hard to the glass bed

PETG bonds aggressively to bare glass and will chip it when you remove the print. Fix: apply a thin layer of Elmer's glue stick to the bed before printing, or switch to a PEI sheet. PEI releases PETG cleanly once the bed cools.

More stringing than PLA

PETG strings more than PLA. Some thin wisps are normal. For heavy cobwebbing: reduce print temp by 5°C, increase travel speed, and enable combing mode in your slicer. See our stringing fix guide.

Rough, bubbly top surface

Rough surfaces often mean wet filament. PETG absorbs moisture within a few days in humid air. Dry it at 65°C for 4 to 6 hours before printing. See our filament drying guide.

PETG LIMITS

Where PETG falls short.

High heat above 80°C. Use ASA or ABS for those applications.

Ultra-fine detail. PLA resolves sharper edges at the same layer height.

Chemical resistance in harsh solvents. ABS handles more chemicals than PETG.

DECISION GUIDE

Ten-second decision guide.

If you are printingUse

Decorative modelPLA

Bracket that holds weight indoorsPETG

Outdoor sign or mountASA

Flexible gasket or gripTPU

Not sure which material fits your project? See our complete filament guide for all 7 material types. Or compare ABS vs PETG and PLA vs ABS.

FREE APP

Stop reprinting calibration squares. Build a settings library.

PETG from one brand and PETG from another need different retraction settings. Log your print temp, bed temp, and retraction distance per spool in PrintLog3D. Next time you open that same brand, you know the settings that worked. No calibration cube. No wasted filament.

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