PLA vs PETG: Which Should You 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.
Pick the Right Material in Under a Minute
| Property | PLA | PETG |
|---|---|---|
| Print temp | 190-220°C | 230-250°C |
| Bed temp | 45-60°C (or none) | 70-85°C |
| Enclosure needed | No | No |
| Heat resistance | Low (~60°C deformation) | Moderate (~80°C) |
| Layer adhesion | Good | Excellent |
| UV resistance | Poor (yellows outdoors) | Moderate |
| Flexibility | Brittle | Semi-flexible |
| Stringing tendency | Low | Higher |
| Ease of print | Very easy | Moderate |
| Best use cases | Decorative prints, prototypes, figures, indoor items | Functional parts, brackets, clips, mild outdoor use, food-safe containers (check brand cert) |
Use PLA When Heat and Strength Don't 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 doesn't matter
- +Anything that won't 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.
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.
Fix These Three PETG Issues Before You Waste a Spool
1. 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.
2. 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 for step-by-step settings.
3. 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 4-6 hours before printing. See our filament drying guide.
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.
Ten-Second Decision Guide
Decorative model
PLA
Bracket that holds weight indoors
PETG
Outdoor sign or mount
ASA
Flexible gasket or grip
TPU
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.
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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