◇ Guide

A Guide to 3D Printing Materials

How to Choose the Right Filament for Your Project

Choosing the right material is one of the most important decisions in 3D printing. The filament you select determines not only how your product looks, but also how it performs — its strength, flexibility, heat resistance, and durability.

In this guide, we'll walk you through the most popular 3D printing materials, their applications, limitations, and compatibility.

PLA

Polylactic Acid

Best for: Decorative items, prototypes, figurines, home decor, low-stress functional parts.

PLA is the most popular filament for a reason. It's easy to print, eco-friendly (made from cornstarch), and produces beautiful results with a slight glossy finish.

Limitations

PLA is not heat-resistant. Items printed in PLA can warp or deform in direct sunlight, near radiators, or in a hot car. It's also more brittle than other materials and not ideal for parts that need to flex or withstand impact.

Our recommendation: Perfect for decorative objects, gifts, architectural models, and anything that won't be exposed to heat or mechanical stress.

PETG

Polyethylene Terephthalate Glycol

Best for: Functional parts, containers, outdoor use, food-adjacent items.

PETG combines the ease of printing of PLA with better durability and heat resistance. It's strong, slightly flexible, and resistant to moisture and chemicals.

Limitations

PETG can be prone to stringing during printing (fine threads between parts), which may require more post-processing. It scratches more easily than PLA.

Our recommendation: Great for functional household items, mechanical parts, and objects that need to withstand moderate heat or outdoor conditions.

ABS

Acrylonitrile Butadiene Styrene

Best for: Durable mechanical parts, automotive components, items exposed to heat.

ABS is the plastic used in LEGO bricks — tough, impact-resistant, and heat-tolerant. It can handle temperatures up to 80–90°C without deforming.

Limitations

ABS is more challenging to print. It requires a heated bed and enclosed printer to prevent warping and cracking. It also produces fumes during printing, so proper ventilation is essential.

Our recommendation: Ideal for functional parts that need to survive heat, impact, or mechanical stress — but requires experienced handling.

TPU

Thermoplastic Polyurethane

Best for: Flexible parts, phone cases, gaskets, seals, wearables.

TPU is a flexible, rubber-like material. It's elastic, shock-absorbing, and highly durable. Parts printed in TPU can bend, stretch, and return to their original shape.

Limitations

TPU is slower and trickier to print. It doesn't work well with all printers and requires careful speed and temperature settings.

Our recommendation: Perfect for anything that needs to flex — protective covers, vibration dampeners, custom grips, and wearable items.

Nylon

Polyamide

Best for: High-strength functional parts, gears, hinges, tools.

Nylon is one of the strongest filaments available. It's wear-resistant, flexible enough to avoid cracking, and can handle repeated stress — making it ideal for mechanical applications.

Limitations

Nylon absorbs moisture from the air, which can ruin print quality. It must be stored in a dry environment and often dried before printing. It also requires high temperatures and may warp without proper bed adhesion.

Our recommendation: Best for engineering applications where strength and durability are critical.

ASA

Acrylonitrile Styrene Acrylate

Best for: Outdoor use, automotive parts, garden items.

ASA is similar to ABS but with one major advantage — UV resistance. It won't yellow or degrade in sunlight, making it perfect for outdoor applications.

Limitations

Like ABS, it requires an enclosed printer and produces fumes. It's also more expensive than standard materials.

Our recommendation: The go-to choice for anything that will live outside.

Material Compatibility

What Can Be Printed Together?

Multi-material and multi-color printing opens up creative possibilities, but not all filaments can be combined.

✓ Compatible Combinations

PLA + PLA (different colors)
PETG + PETG
PLA + PVA (water-soluble support)
ABS + HIPS (dissolvable support for ABS)

✗ Incompatible Combinations

PLA + ABS — different temps and adhesion
PLA + PETG — poor layer adhesion
TPU + rigid materials — flexibility mismatch

When designing multi-part assemblies (e.g., a rigid frame with flexible inserts), we print parts separately and assemble them afterward for the best results.

How We Help You Choose

Not sure which material is right for your project? That's what we're here for.

Tell us:

What is the item for?
Will it be exposed to heat, sunlight, or moisture?
Does it need to flex, snap together, or withstand impact?
Is it decorative or functional?

Based on your answers, we'll recommend the optimal material — and let you know if your design needs any adjustments to print successfully.

Have a project in mind?