Kea Modelling

3D Printing Materials — PLA & PETG Available in Auckland

We offer two of the most versatile FDM printing materials. Here's everything you need to know to choose the right one for your project.

Not sure which to choose? Book a free consultation and we'll advise you.

PLA

Most popular

Polylactic Acid. The go-to material for most 3D printing jobs. Rigid, precise, and available in a huge range of colours. Easy to post-process.

✓ Excellent dimensional accuracy
✓ Widest colour selection
✓ Easy to sand and paint
✓ Biodegradable (plant-based)
✓ Crisp surface finish

Ideal for

Models, prototypes, decorative items, props, low-stress mechanical parts

Avoid for

Parts left in hot cars, direct outdoor sun exposure, high-impact applications

PETG

Best for functional parts

Polyethylene Terephthalate Glycol. Tougher and more heat-resistant than PLA. The right choice when parts need to handle real-world stress.

✓ Impact and stress resistant
✓ Heat tolerant up to ~80°C
✓ Good UV and outdoor stability
✓ Slightly flexible (snap-fit friendly)
✓ Food-safe options available

Ideal for

Mechanical parts, enclosures, outdoor use, snap-fit components, electronics housings

Avoid for

Parts requiring very tight tolerances, applications needing a perfectly matte finish

Side-by-Side Comparison

PropertyPLAPETG
RigidityHighMedium-high
Impact resistanceMediumHigh
Heat tolerance~60°C~80°C
Outdoor UV stabilityPoorGood
FlexibilityBrittleSlightly flexible
Colour rangeExtensiveWide
Surface finishExcellentVery good
Post-processingEasy (sand/paint)Moderate

Common Questions

What is the difference between PLA and PETG?

PLA is rigid, precise, and available in more colours — best for models, prototypes, and decorative items. PETG is tougher, more heat-resistant, and better for functional parts that need to handle stress or outdoor conditions.

Which material should I use for functional parts?

PETG is generally the better choice for functional parts. It handles temperatures up to ~80°C, is impact resistant, and has some flexibility. For decorative or low-stress parts, PLA works great.

Is PLA or PETG better for outdoor use?

PETG is better for outdoor use. PLA can warp or soften in direct sunlight (temperatures above ~60°C), while PETG is more UV stable and heat tolerant.

Can I get my part printed in a specific colour?

Yes — we stock a wide range of colours for both PLA and PETG. You can choose a colour when uploading your STL on the homepage. If you need a very specific colour, request a custom colour and we'll do our best to match it.

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