# Do more walls or more infill make parts stronger?

Add walls before you raise infill for most functional parts, and treat 3–5 walls with 15–40% infill as the community summary rather than a catalog setting.

For a part that has to take a load, add walls before you fill the middle. The 3–5 wall and 15–40% infill band is the community summary. It is not stored on any filament row. [Strength](/answers/strength) is which material to load. This page is the slicer choice after that.

## What the catalog stores

[Prusament PETG](/brand/prusament/petg) lists 240–260 °C (464–500 °F) and 70–90 °C (158–194 °F). [PolyMax PLA](/brand/polymaker/polymax-pla) lists 190–230 °C (374–446 °F) and 25–60 °C (77–140 °F), with a drying temperature of 55 °C (131 °F) and no hours. [eSUN PLA+](/brand/esun-3d/pla-plus) lists 190–230 °C (374–446 °F) and 50–70 °C (122–158 °F), and drying is not stored. [Bambu PLA Basic](/brand/bambu-lab/pla-basic) lists 190–230 °C (374–446 °F), 35–45 °C (95–113 °F), and drying at 50 °C (122 °F) for 8 h. None of those records has a wall count. [PLA](/material/pla), [PETG](/material/petg), and [PLA+](/material/pla-plus) are the material hubs.

## User settings in the bank

One variant describes a wood PLA birdhouse at 3 walls and 30% gyroid and asks whether wood pulp helped it last outdoors. The supplied top comments on r/3Dprinting 1w14zsq are about sparrows in that birdhouse and about PLA in the sun, including a boomerang left on a dashboard. The outdoor question is [Can PLA be used outdoors?](/answers/pla_outdoor). The 3-wall line is not a strength test in the comments we have.

A variant names PLA+ at 205 °C (401 °F) and a 60 °C (140 °F) bed, 2 walls, and 100% infill. That nozzle sits inside the eSUN PLA+ range of 190–230 °C (374–446 °F). The 60 °C (140 °F) bed sits inside the 50–70 °C (122–158 °F) bed. Two walls and 100% infill are still that user's choices. A variant names a PETG print at 230 °C (446 °F), an 80 °C (176 °F) bed, and 15% gyroid. Prusament PETG's nozzle starts at 240 °C (464 °F), so 230 °C (446 °F) is not that row.

## Comments that answer a different failure

A comment on r/FixMyPrint x5ly22 says the failure is bad bed adhesion. Another says 100% infill wastes a lot of filament. [Bed adhesion](/answers/bed_adhesion) is the first of those. The second agrees with spending plastic on walls rather than a solid interior, and it is one comment, not a measured strength curve.

r/FixMyPrint 1eqtpsj, r/FixMyPrint 12xa9z5, and r/prusa3d 1kg80ll are in the bank. The supplied excerpts do not include a wall or infill number from those threads.

Updated 2026-10-16. Sources accessed 2026-10-16. 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 | Polymaker PolyMax PLA | 190–230 °C (374–446 °F) | 25–60 °C (77–140 °F) | — |
| 3 | eSUN 3D PLA+ | 190–230 °C (374–446 °F) | 50–70 °C (122–158 °F) | — |
| 4 | Bambu Lab PLA Basic | 190–230 °C (374–446 °F) | 35–45 °C (95–113 °F) | — |

## What the community says

The editorial summary says more walls add more strength than more infill for most functional parts, and that 3–5 walls with 15–40% infill is typical. This catalog does not store either number. A comment on r/FixMyPrint x5ly22 says the pictured failure is bad bed adhesion, and another says 100% infill wastes a lot of filament. A comment on r/3Dprinting 1w14zsq is about PLA left in the sun, including a dashboard boomerang, which belongs on the PLA outdoor page. The 3-wall, 30% gyroid line is a variant phrasing about a wood PLA birdhouse, not a measured strength result in the supplied comments.

## Sources

- [Prusament PETG technical data sheet](https://www.prusa3d.com/file/3464616/prusament-petg-technical-data-sheet.pdf) (datasheet)
- [PolyMax PLA technical data sheet](https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyMax_PLA_TDS_EN_V5.4.pdf) (datasheet)
- [Bambu PLA Basic technical data sheet V3.0](https://cdn.shopify.com/s/files/1/0584/7236/6216/files/Bambu_PLA_Basic_Technical_Data_Sheet_bf3411ce-be39-4db7-9669-1b4671d2196b.pdf?v=1734060943) (datasheet)
- [Open Filament Database, eSUN 3D PLA+](https://api.openfilamentdatabase.org/api/v1/brands/esun_3d/materials/PLA/filaments/pla+/index.json) (other)
- [Community source, r/3Dprinting 1w14zsq](https://www.reddit.com/r/3Dprinting/comments/1w14zsq/) (reddit)
- [Community source, r/FixMyPrint x5ly22](https://www.reddit.com/r/FixMyPrint/comments/x5ly22/) (reddit)
- [Community source, r/FixMyPrint 1eqtpsj](https://www.reddit.com/r/FixMyPrint/comments/1eqtpsj/) (reddit)
- [Community source, r/FixMyPrint 12xa9z5](https://www.reddit.com/r/FixMyPrint/comments/12xa9z5/) (reddit)
- [Community source, r/prusa3d 1kg80ll](https://www.reddit.com/r/prusa3d/comments/1kg80ll/) (reddit)

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