Introduction
If you have spent any time shopping for 3D printing filament, you have almost certainly seen two very similar labels side by side: PLA and PLA+. At first glance they look like the same material, but the "+" matters more than you might think. Understanding the difference can save you from brittle prints, clogged nozzles, and wasted spools.
What Is PLA?
PLA (Polylactic Acid) is the most widely used filament in desktop FDM printing. It is made from renewable resources such as corn starch or sugarcane, prints at relatively low temperatures (typically 190–220°C), and does not require a heated bed. Its low odor, minimal warping, and ease of use make it the default choice for beginners and for decorative prints alike.
What Is PLA+?
PLA+ is not a single standardized formula; it is a family of enhanced PLA blends. Manufacturers improve the base resin with additives and modified polymers to boost impact resistance, layer adhesion, and surface finish. As a result, PLA+ usually prints a little hotter (around 200–230°C) and delivers noticeably tougher parts than standard PLA.
Key Differences
- Strength & toughness: PLA+ offers better impact resistance and less brittleness, making it closer to ABS in durability while remaining easy to print.
- Printing temperature: PLA+ typically needs a slightly higher nozzle temperature and benefits from a heated bed set to 50–60°C.
- Surface finish: PLA+ often produces smoother walls and richer color saturation.
- Price: PLA+ is usually a small step up in cost, though the improved reliability often justifies it.
When to Choose PLA
Stick with standard PLA for prototypes, low-stress decorative models, and any project where you want the simplest possible printing experience. Its forgiving nature makes it ideal for first prints, educational use, and rapid iteration.
When to Choose PLA+
Reach for PLA+ when your parts need to survive real handling: functional enclosures, snap-fit clips, mechanical brackets, cosplay props, and anything that will be flexed or dropped. The added toughness dramatically reduces the chance of cracked or shattered prints.
Conclusion
Both PLA and PLA+ have a place on your workbench. For most users, keeping a spool of each is the smart move: standard PLA for quick drafts, and PLA+ for final functional parts. Whichever you choose, store your filament dry and print a temperature tower to dial in the ideal settings for your specific spool.