The short answerPLA+ handles loads better than PLA.
For functional parts, PLA+ is the easy upgrade over PLA. It takes impact without snapping, prints without a heated chamber, and costs less than PETG. The eSUN PLA+ datasheet rates its impact strength well above standard PLA.
Why PLA+ suits functional parts
A functional part takes load, gets handled, or fits onto something. Standard PLA is rigid but brittle, so it cracks under impact. PLA+ blends in modifiers that raise impact resistance and lower brittleness, so brackets, clips, and mounts survive use. The SUNLU PLA+ sheet lists a tensile strength of 58 MPa.
Settings for strong parts
| Setting | Recommended | Why |
|---|---|---|
| Nozzle temperature | 210 to 230 °C | eSUN 210 to 230, SUNLU 205 to 215. |
| Bed temperature | 50 to 60 °C | A warm bed aids first-layer strength. |
For strength, add wall perimeters rather than dense infill. Run the part cooling fan at full speed, and keep the speed near 40 to 60 mm/s so the layers bond well.
PLA+ versus the alternatives for functional parts
| Property | PLA+ | PLA | PETG |
|---|---|---|---|
| Impact resistance | Medium | Low | High |
| Layer strength | Medium | Low | High |
| Ease of print | Easy | Easy | Medium |
| Heat resistance | Low | Low | Medium |
| Cost | Low | Lowest | Medium |
| Best for | Light loads | Display | Real loads |
Common functional-part failures
| Likely cause | Fix | Severity |
|---|---|---|
| Part snaps on impact | Dry the PLA+ and add more perimeters | hi |
| Layers split under load | Raise the nozzle toward 230 °C | md |
| Threads strip | Print holes upright and tap them | md |
| Part deforms in warmth | Switch to PETG for warm environments | lo |
Key takeaways
- PLA+ takes impact better than standard PLA.
- Print at 210 to 230 °C with a 50 to 60 °C bed.
- Add perimeters, not infill, for strength.
- Dry PLA+ before printing load-bearing parts.
Frequently asked
Is PLA+ strong enough for functional parts?
How do I make PLA+ parts stronger?
PLA+ or PETG for functional parts?
Does PLA+ warp like ABS?
For the impact numbers, read PLA+ impact resistance. For settings detail, see the PLA+ temperature settings. The PLA+ overview covers what the blend is.
Related guides
Related
Sources & methodology
3 citations · reviewed 2026-07-09- 01eSUN PLA+ Technical Data Sheetaccessed 2026-07-06Tier 1
- 02SUNLU PLA+ Technical Data Sheetaccessed 2026-06-29Tier 1
- 03All3DP PLA+ Filaments Buyer's Guideaccessed 2026-06-29Tier 2