Cosplay
What filament should I use for cosplay armor?
First in this ranking: Prusament PETG.
- Nozzle240–260 °C
- Bed70–90 °C
- SpeedNot listed
- Dry—
- Density1.27 g/cm³
Ranked filaments
| Rank | Filament | Material | Nozzle | Bed | Price / kg | Datasheet | Retailer |
|---|---|---|---|---|---|---|---|
| 1 | Prusament PETGThe wearable default. Prusa describes PETG as tenacious, and the cosplay threads pick it when PLA would soften in a car or crack at a con. | PETG | 240–260 | 70–90 | Not listed | Datasheet | Not configured |
| 2 | Polymaker Polylite PLAThe sandable, low-warp shell. Right for a prop that will be filled and painted and will not sit in the sun. | PLA | 190–230 | 25–60 | Not listed | Datasheet | Not configured |
| 3 | Polymaker PolyMax PLAA tougher PLA for plates that get bumped, still subject to Prusa’s heat warning. | PLA | 190–230 | 25–60 | Not listed | Datasheet | Not configured |
| 4 | Prusament TPU 95AStraps, hinges, and anything that must fold. Not the breastplate. | TPU | 220–240 | 55–75 | Not listed | Not listed | Not configured |
How the ranking was chosen
Match the filament to the piece. A helmet that rides in a car is not the same part as a wall-art pauldron, and TPU is a third part entirely.
Pros and cons
Pros
- PETG survives handling and a warm car better than PLA, which is the failure the cosplay threads describe.
- PLA remains the easy material for a painted shell, which is why it stays on the list.
Cons
- PETG strings and does not sand like PLA. Budget time for filler if the surface has to be smooth.
- ABS and ASA make a tough, heat-resistant shell and need ventilation. They are not the default for a first armor build.
Printer considerations
- Large armor wants a printer that can hold PETG bed temperatures. Check the bed maximum on the printer page against the PETG row.
- PLA sanding is wet sanding, according to Prusa. That is a finishing note, not a reason to print ASA in a bedroom.
- Leave fiber-filled filament off wearable armor. A cosplay thread specifically warns that glass and carbon fill can come out of a sanded surface.
What the community says
r/3Dprinting cosplay threads split the suit by job. PETG is the go-to for parts that must not break and must not ride in a hot trunk. PLA is accepted for greeblies and for armor that will be painted, with an explicit warning about cars and sunlight. TPU is the flexible armor and the straps. ABS shows up only with a ventilation caveat. Carbon-filled grades are discouraged for pieces that get sanded against skin.
- Best filament for cosplay, r/3Dprinting
- Ignoring cost, what is the best filament for cosplay armor?, r/3Dprinting
Sources & notes
Accessed 14 October 2026.
- PETG, Prusa Knowledge Base manufacturer
- PLA, Prusa Knowledge Base manufacturer
- Prusament PETG technical data sheet datasheet
- Best filament for cosplay, r/3Dprinting reddit
- Ignoring cost, what is the best filament for cosplay armor?, r/3Dprinting reddit
Related questions
- What filament should I use for heat?Heat resistance
- What filament should I use when the part has to bend?Flexible
- What filament should I use for miniatures?Miniatures
Questions
Is PLA+ better armor than PETG?
PLA+ sands and prints like PLA and still softens in heat. PETG is the higher rank for a piece that is worn out of the house. PolyMax PLA is the indoor tougher-PLA option.
Should armor be printed in ASA?
ASA handles heat and sun, and it needs the enclosure and ventilation on the outdoor guide. For a first suit printed on an open machine, PETG is the recommendation.