The short answerPETG for rigidity. PLA+ for light mounts.
A phone mount holds a phone steady, so it needs rigidity and layer strength. PETG is the pick for a mount that holds up. PLA+ works for a light mount. Standard PLA is too brittle for the clamp.
What a phone mount asks of a filament
A phone mount carries the weight of the phone and survives being clipped and unclipped. It needs rigidity and layer adhesion, especially across the clamp. PLA is too brittle for the clamp, which takes repeated flex.
How the materials compare
| Property | PETG | PLA+ | PLA |
|---|---|---|---|
| Rigidity | Medium | Medium | High |
| Layer strength | High | Medium | Low |
| Clamp toughness | High | Medium | Low |
| Ease of print | Medium | Easy | Easy |
| Best for | Car and desk mounts | Light mounts | Not recommended |
When to pick PETG
Pick PETG for a mount that holds up to use. It is rigid, bonds layers well at 240 to 260 °C, and survives the clamp flex. A car or desk mount in PETG holds the phone without snapping.
When to pick PLA+
Pick PLA+ for a light desk mount. It is tougher than PLA and easy to print. Keep it out of a hot car, because PLA+ softens near 53 °C.
Frequently asked
What is the best filament for a phone mount?
Can I print a phone mount in PLA?
Is PETG good for a car phone mount?
How do I make a phone mount stronger?
For the materials, read the PETG guide or PLA+ guide. For wall mounts, see best filament for wall mounts.
Related guides
Related
Sources & methodology
3 citations · reviewed 2026-07-09- 01Prusament PETG Technical Datasheetaccessed 2026-07-06Tier 1
- 02eSUN PLA+ Technical Data Sheetaccessed 2026-07-06Tier 1
- 033DSourced Complete 3D Printer Filament Guideaccessed 2026-06-29Tier 2