PLA+ is PLA with additives — typically impact modifiers and plasticizers — that increase toughness without dramatically changing print settings. It snaps less easily than standard PLA and holds its shape slightly better under stress. It’s not an engineering material, but it’s meaningfully tougher than standard PLA for functional parts that stay indoors.
What “Plus” Actually Changes
Standard PLA is brittle — parts snap rather than bend under impact. PLA+ typically has 2–4× higher impact resistance and more elongation before fracture. This matters for parts with thin walls, hooks, clips, or anything that gets handled roughly.
The heat resistance limit stays roughly the same (~60–65°C). PLA+ is not suitable for car dashboards, outdoor summer use, or anything near heat sources. That limit is in the base polymer, not in what the additives address.
Where PLA+ Makes Sense Over Standard PLA
Functional brackets, tool holders, and mechanical parts used indoors. Parts with snap fits or clips that need to engage and release without immediately fracturing. Figurines or display pieces that get handled rather than just displayed. Cases and enclosures that might be dropped.
If the part needs heat resistance above 65°C, needs to go outside, or needs high impact resistance under sustained load — PLA+ won’t solve those problems. Use PETG, ASA, or ABS depending on the requirement.
Temperature
Nozzle: 215–220°C works for most PLA+ brands. This is 10–20°C higher than standard PLA, which is where the impact modifiers improve layer bonding. Running PLA+ at 200°C (standard PLA temperature) gives you weaker layer adhesion than standard PLA at 200°C. If you’re not getting the toughness improvement you expect, check that you’re printing at the right temperature.
eSUN PLA+ prints well at 220°C. Bambu PLA Basic (which is essentially PLA+) runs at 220°C. Generic brands vary — check the manufacturer’s recommendation and start there.
Bed: 55–60°C on PEI. Same as standard PLA.
Fan Speed
60–80% fan, slightly lower than standard PLA’s 100%. The impact modifier needs slightly more heat retention to bond properly between layers. Running 100% fan on PLA+ slightly reduces the toughness benefit over standard PLA.
Retraction
Same as standard PLA: 0.5–1mm on direct drive, 4–5mm on Bowden. PLA+ strings less than PETG but slightly more than standard PLA in some brands.
Compared to PETG
PETG has better heat resistance, better layer adhesion, and better chemical resistance. PLA+ has a smoother surface finish, prints faster, and doesn’t stick to the bed as aggressively. For indoor functional parts without heat requirements, both are valid choices — PLA+ is easier to tune, PETG is more durable long-term.