PETG, ABS or TPU: which material for a 3D printed car part?
PETG, ABS, or TPU: which material for a 3D printed car part?
Not all 3D printing materials are suitable for automotive applications. At L'Atelier 3D, we never use PLA for vehicle parts: its deformation temperature of 55-60°C makes it completely unsuitable. Here is a complete guide to the three materials we use.
ABS: The material for original manufacturer parts
Strengths: Deformation temperature 90-100°C, excellent impact resistance, easy to sand and paint.
Usage: Door handles, levers, buttons, any mechanical part subjected to stress.
PETG: Ideal for outdoor use and UV exposure
Strengths: Deformation temperature 75-80°C, excellent UV resistance, high chemical resistance (oils, fuel).
Usage: Exterior body parts, grilles, headlight covers, under-hood mounts.
TPU: Essential for flexible parts and seals
Strengths: Flexible elastomer (Shore A 85-95), high tear resistance, maintains flexibility down to -40°C.
Usage: Gear shift or transfer boots, hatch seals, flexible covers, tarp clips.
Comparison Table
| Material | Heat | UV | Flexibility | Usage |
|---|---|---|---|---|
| ABS | 90-100 C | Medium | Rigid | Handles, levers |
| PETG | 75-80 C | Excellent | Semi-rigid | Exterior, under hood |
| TPU | 80 C | Good | Very flexible | Seals, boots, clips |
All our Land Rover parts and Toyota parts are manufactured in the appropriate material.
Frequently Asked Questions
Why not use PLA for car parts?
PLA deforms at 55-60°C. This temperature is easily reached in a car interior during summer. We only use ABS, PETG, and TPU.
How to choose between ABS and PETG?
Interior part -> ABS. Exterior or under-hood part -> PETG. If in doubt, PETG is the safer choice.
Does TPU resist mechanical fluids?
TPU resists engine oil and fuel well. It is slightly sensitive to DOT 4/5 brake fluid with prolonged exposure.