PLA, PETG or TPU? Choosing the Right Filament for Your Print

Walk into our shop in Aberbeeg and the most common question we hear is "which filament should I buy?" For most people the answer is one of three: PLA, PETG or TPU.

PLA — the easy all-rounder

PLA is the easiest filament to print. It sticks well, barely warps and comes in the widest range of colours and finishes, from matte and silk to marble and glow-in-the-dark.

• Best for: models, figures, prototypes, decorations and gifts.
• Watch out for: heat. PLA can soften in a hot car or on a sunny windowsill.

PETG — tougher and more heat tolerant

PETG is a step up in toughness. It bends a little before breaking and copes better with warmth and moisture.

• Best for: brackets, enclosures, outdoor items and functional parts.
• Watch out for: stringing. Keep it dry and use your slicer's PETG profile.

TPU — flexible and grippy

TPU is rubber-like. It squashes, flexes and springs back.

• Best for: phone cases, bumpers, seals, feet and grips.
• Watch out for: speed. Print it slower, and check your printer and AMS support it before buying.

Quick rule of thumb

• Looks matter most? PLA.
• Needs to be strong or live outside? PETG.
• Needs to bend? TPU.

Compare finishes in our materials guide or browse the Bambu Lab filament collection. Not sure? Pop in or ask through the contact page.