# What filament should I use for hooks, brackets and load-bearing parts?

Use PETG for hooks, brackets, and clamps that stay under about 80 °C (176 °F), and ASA when the part also needs the higher heat and UV resistance Prusa lists. Plain PLA is the wrong default: Prusa says it is not suitable for technical use and that it softens above 60 °C (140 °F).

Use PETG for hooks, brackets, and clamps that stay under about 80 °C (176 °F), and ASA when the part also needs the higher heat and UV resistance Prusa lists. Plain PLA is the wrong default: Prusa says it is not suitable for technical use and that it softens above 60 °C (140 °F).

Print hooks, brackets, and clamps in [PETG](/material/petg) when the part stays in the range Prusa calls suitable for interior and most exterior use below 80 °C (176 °F). Step up to [ASA](/material/asa) when you need the UV and temperature resistance Prusa lists, up to 93 °C (199 °F), and you can ventilate the printer. Leave [PLA](/material/pla) for models that are not holding a load. [Strength](/answers/strength), [heat](/answers/heat), [PETG printing](/answers/petg_print), and [PLA printing](/answers/pla_print) cover the rest of those choices.

## What the maker pages actually say

[Prusa's PLA article](https://help.prusa3d.com/article/pla_2062) says PLA is not suitable for technical and outdoor use. It gets soft and deforms at temperatures over 60 °C (140 °F), and it breaks along layers or into shards on impact. The best use they name is concept models, prototypes, and low-wear toys. Their profile on that page is 215 °C (419 °F) for the first layer, 210 °C (410 °F) after that, and a 60 °C (140 °F) bed. [Prusament PLA](/brand/prusament/pla) in the catalog is a different pair, 205–225 °C (401–437 °F) and 40–60 °C (104–140 °F), from the Open Filament Database.

[Prusa's PETG article](https://help.prusa3d.com/article/petg_2059) calls PETG suitable for technical parts, including holders and clamps, and says parts are suitable for interior and most exterior use below 80 °C (176 °F). They print parts of their own printers in PETG. The article's profile is 230 °C (446 °F) then 240 °C (464 °F), with a bed of 85 °C (185 °F) then 90 °C (194 °F). [Prusament PETG](/brand/prusament/petg) lists 240–260 °C (464–500 °F) and 70–90 °C (158–194 °F). For a tougher part they say turn the fan off, and add perimeters rather than infill. [PolyLite PETG](/brand/polymaker/polylite-petg) is another published PETG row if you are not on a Prusa profile.

[Prusa's ASA article](https://help.prusa3d.com/article/asa_1809) lists UV resistance and temperature resistance up to 93 °C (199 °F), and says ASA is for outdoor and technical parts. The profile there is 260 °C (500 °F) and a bed of 105 °C (221 °F) then 110 °C (230 °F). [Prusament ASA](/brand/prusament/asa) lists 250–270 °C (482–518 °F) and 100–120 °C (212–248 °F). The same article says ASA releases potentially dangerous fumes, names styrene in the cons list, and says large parts need an enclosure. [Fumes](/answers/abs_fumes) is that limit. [Prusament](/brand/prusament) is the brand index.

## What the supplied threads do

[r/3Dprinting 1afdylq](https://www.reddit.com/r/3Dprinting/comments/1afdylq/) is a bet on how fast a PLA bottle holder sags. The score-2 comment says a day or two for regular PLA and a couple of perimeters. It does not measure the bottle, the temperature, or the wall count. Do not treat "a day or two" as a material spec.

[r/3Dprinting skq3dn](https://www.reddit.com/r/3Dprinting/comments/skq3dn/) is underextrusion. The score-10 comment says the print recovered after OctoPrint was removed. That is a feed path.

[r/functionalprint 1k40i3y](https://www.reddit.com/r/functionalprint/comments/1k40i3y/) is a desk headphone hook in Fiberon PETG-rCF. The score-24 comment asks what the design does that other holders do not. It is not a material vote. [Carbon fiber](/answers/cf) is where a fiber-filled PETG belongs if you print one.

Updated 2026-10-19. Sources accessed 2026-10-19. Use case: Strength.

## Ranked filaments

| Rank | Filament | Nozzle | Bed | Price per kg |
| --- | --- | --- | --- | --- |
| 1 | Prusament PETG | 240–260 °C (464–500 °F) | 70–90 °C (158–194 °F) | — |
| 2 | Prusament ASA | 250–270 °C (482–518 °F) | 100–120 °C (212–248 °F) | — |
| 3 | Prusament PLA | 205–225 °C (401–437 °F) | 40–60 °C (104–140 °F) | — |

## What the community says

r/3Dprinting 1afdylq asks how long PLA will take to sag under a bottle. The score-2 comment says a day or two, assuming regular PLA and a couple of perimeters, and says it could be better with strength settings and the type of PLA. That is a guess, not a measured creep time. r/3Dprinting skq3dn is spongy extrusion, not a bracket. r/functionalprint 1k40i3y shows a headphone hook printed in Fiberon PETG-rCF. The score-24 comment asks how the design differs from other holders. It does not pick a filament. No excerpt was supplied for r/BambuLab 1czxpkp or r/FixMyPrint 1dz9tey, so this page does not quote them. The bank titles around those links are PLA waste and stringing.

## Sources

- [Prusa Knowledge Base, PLA](https://help.prusa3d.com/article/pla_2062) (manufacturer)
- [Prusa Knowledge Base, PETG](https://help.prusa3d.com/article/petg_2059) (manufacturer)
- [Prusa Knowledge Base, ASA](https://help.prusa3d.com/article/asa_1809) (manufacturer)
- [Prusament PETG technical data sheet](https://www.prusa3d.com/file/3464616/prusament-petg-technical-data-sheet.pdf) (datasheet)
- [Open Filament Database, Prusament ASA](https://api.openfilamentdatabase.org/api/v1/brands/prusament/materials/ASA/filaments/asa/index.json) (other)
- [Open Filament Database, Prusament PLA](https://api.openfilamentdatabase.org/api/v1/brands/prusament/materials/PLA/filaments/pla/index.json) (other)
- [Community source, r/3Dprinting 1afdylq](https://www.reddit.com/r/3Dprinting/comments/1afdylq/) (reddit)
- [Community source, r/3Dprinting skq3dn](https://www.reddit.com/r/3Dprinting/comments/skq3dn/) (reddit)
- [Community source, r/functionalprint 1k40i3y](https://www.reddit.com/r/functionalprint/comments/1k40i3y/) (reddit)
- [Community source, r/BambuLab 1czxpkp](https://www.reddit.com/r/BambuLab/comments/1czxpkp/) (reddit)
- [Community source, r/FixMyPrint 1dz9tey](https://www.reddit.com/r/FixMyPrint/comments/1dz9tey/) (reddit)

HTML: https://filamentfacts.com/answers/functional_hooks