Assorted functional 3D printed components used to compare PLA, PETG, ABS/ASA, Nylon and PC

Best 3D Printing Materials: PLA vs PETG vs ABS/ASA, Nylon & PC

Choosing the best 3D printing material depends on what the part needs to survive: heat, UV, impact, flex, chemicals, or just looking good fast. In Australia, the combination of sun/UV + warm cars + outdoor exposure makes material choice matter even more for brackets, enclosures, mounts, and functional prototypes.

This guide compares the most common FDM materials we use for functional work—PLA, PETG, ABS, ASA, Nylon and Polycarbonate (PC)—with practical advice on when to pick each (so you don’t waste time or money reprinting).

Quick answer: what’s the “best” 3D printing material?

  • General functional parts: PETG
  • Outdoor parts (UV + weather): ASA
  • Higher heat + tougher engineering use: ABS or PC (case-by-case)
  • Impact + wear + mechanical performance: Nylon (and composites)
  • Fast + cheap prototypes & visual checks: PLA

Tip: If you’re unsure, start with PETG for most functional indoor parts, and switch to ASA if the part will live outside.

Material comparison table (PLA vs PETG vs ABS/ASA vs Nylon vs PC)

Material Best for Pros Watch-outs Notes
PLA Fast prototypes, jigs, display parts Great detail, low warp, cheapest Softens in heat, poor UV/outdoor life Not ideal for car interiors or outdoors
PETG General functional parts, brackets, housings Tough, good layer bonding, chemical resistant Can string; not as heat/UV strong as ASA “Default” choice for most functional parts
ABS Higher heat parts, enclosures, engineering prototypes Heat capable, tough, post-processable Warps; needs enclosure; UV can degrade Good indoors; outdoor is better with ASA
ASA Outdoor parts (sun, rain, UV), signage, covers UV stable, weather resistant, strong Warps; needs enclosure; print tuning Our go-to for Australian outdoor parts
Nylon Wear parts, impact parts, clips, hinges High toughness, abrasion resistant Absorbs moisture; needs drying; can creep Great when you need “not brittle”
PC (Polycarbonate) High strength + higher heat engineering parts Very strong, heat capable Hard to print; needs enclosure & experience Best when performance matters most

How to choose the right material (by real-world use)

1) Outdoor parts in Australia (UV + weather)

If the part will sit outside—sunlight, heat cycles, rain—ASA is usually the safest choice. PLA will age quickly outdoors, and ABS can degrade under UV over time.

  • Best pick: ASA
  • Alternative: PETG for sheltered outdoor use (less UV exposure)

2) Brackets, mounts, general functional parts (indoors)

For most functional parts that need toughness without being overkill, PETG is the best balance of strength, print reliability, and cost.

  • Best pick: PETG
  • Upgrade: ABS / PC if you need more heat resistance

3) Heat exposure (car interiors, near motors, warm enclosures)

If the part will sit in a hot environment (think: a car parked in summer), avoid PLA. Move to ABS, ASA, or PC depending on how demanding the application is.

  • Best pick: ABS or ASA
  • Highest performance: PC (when designed + printed correctly)

4) Clips, hinges, impact parts, wear surfaces

When you want the part to flex and survive repeated use without cracking, Nylon is a strong option (especially for impact + abrasion).

  • Best pick: Nylon
  • Alternative: PETG for simpler, lower-wear parts

Printing notes (why some materials “fail”)

PLA

  • Great for accuracy and speed, but not for heat or outdoor longevity.

PETG

  • Very reliable for functional parts; can be stringy if not tuned.
  • Great layer bonding = strong parts when oriented correctly.

ABS / ASA

  • Both benefit from an enclosure to reduce warping.
  • ASA is preferred for outdoor parts due to UV stability.

Nylon

  • Moisture is the #1 issue—wet nylon prints poorly and weak.
  • Dry filament = huge difference in part quality.

PC

  • High performance, but needs controlled printing conditions.

FAQ

Is PLA “strong”?

PLA can feel strong for static loads, but it’s more likely to soften with heat and doesn’t handle outdoor conditions well. For functional parts, PETG is often a better baseline.

Is PETG good for outdoor use?

It can be, especially for sheltered applications. For parts that sit in direct sun long-term, ASA is typically the safer outdoor material.

What’s the best material for an enclosure?

PETG for general enclosures, ABS/ASA if heat is a factor, and ASA if the enclosure is outdoors.

Can you recommend a material if I upload my model?

Yes. If you send the STL/STEP and tell us the use case (indoor/outdoor, load, heat exposure), we’ll recommend the best material and quote it.

Need help choosing the right material?

If you want a quick recommendation, send:

  • Your file (STL / STEP)
  • Where it will be used (indoor/outdoor)
  • Any heat exposure (car, motor, sunlight)
  • How many parts you need

Upload your model and we’ll come back with the best material option and a quote.

Related: 3D Printing vs CNC Machining: cost, lead time & when to choose each