Guide
Which material resists impacts in 3D printing?
“Impact” can mean a rigid part that does not crack — or a flexible part that absorbs energy. Different filaments.
In FDM, PLA is often brittle under sharp impacts. PETG improves toughness for everyday parts. ABS and PA step up for rigid, loaded use. TPU is the right family when you need deformation and damping — bumpers, feet, soft jaws. HIPS is usually not a go-to for final loaded parts; see HIPS support guide. Also: PLA vs PLA+, mechanical parts.
Rigid part that must survive knocks: PETG → ABS → PA by severity.
Absorb impacts: TPU.
- Impact
- Toughness
- Flexible
Result in under a minute
In one sentence
Direct answer: for rigid impact resistance, move past PLA for serious use; PETG is the common first step, then ABS or PA as needs grow. For energy absorption, use TPU — accepting flexibility.
Rigid parts — summary
| Criterion | PLA | PETG | ABS | PA |
|---|---|---|---|---|
| Toughness / impact (trend) | Low | Fair | Good | Very good |
| Ease | Very high | High | Medium | Low |
TPU for damping: TPU sheet · Flexible parts guide.
Quick verdict
Clarify rigid impact vs flexible absorption first. Do not confuse impact with heat — heat guide.
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FAQ
Is PC “impact resistant”?
PC can be very tough on some geometries — still a hard filament to print; see PC vs ABS and the PC page (FR).