What is PLA? - Plant-based and Biodegradable Filament
PLA is The Friendliest Filament for 3D Printing Newbies
If you’ve recently heard about 3D printing or are considering trying it yourself, you’ve probably come across the term PLA. But, what is PLA? It’s one of the first things beginners bump into—and for good reason.
PLA is the most commonly used material in 3D printing, especially for home and hobbyist printers. But what exactly is it?
Let’s break it down in the simplest way possible.
What Does “PLA” Stand For?
PLA stands for Polylactic Acid. That may sound like a complex science term, but it’s actually a type of plastic made from natural sources, like corn starch or sugarcane. Unlike most traditional plastics, which are made from petroleum (oil), PLA is plant-based and biodegradable. That makes it one of the more eco-friendly options in the world of 3D printing.
Why Do People Love Printing with PLA?
There are a few reasons why PLA is often the first choice for beginners (and plenty of experienced makers too):
✅ Easy to Print
PLA is very forgiving. It melts at a relatively low temperature (around 180–220°C), doesn’t require a heated bed, and sticks well to many surfaces. That means fewer failed prints, especially when you’re just getting started.
✅ No Harsh Smells
Unlike some other plastics, PLA doesn’t give off strong, unpleasant fumes when it’s melted. It actually smells slightly sweet—thanks to its plant-based ingredients.
✅ Affordable and Available
PLA is one of the cheapest and most widely available filaments. You’ll find it in lots of colors and finishes, from glow-in-the-dark to silky metallic.
✅ Good-Looking Prints
PLA cools quickly and holds its shape well. That means your objects usually come out smooth and crisp—great for decorative pieces, prototypes, or toys.
Are There Any Downsides?
PLA is great, but it’s not perfect. Here are a couple of things to keep in mind:
- It’s not very heat-resistant. Leave a PLA object in a hot car or near a sunny window, and it might start to warp or soften.
- It’s more brittle than some other plastics. PLA is not ideal for parts that need to bend or take a lot of pressure.
That said, it’s more than good enough for most beginner projects, like organizers, display models, or simple gadgets.
Is PLA Safe?
Yes—especially compared to some other 3D printing materials. PLA is generally safe to use indoors, and many people print with it in offices, homes, and classrooms. Still, it’s always smart to print in a well-ventilated area and follow safety guidelines.
What Can You Print with PLA?
Just about anything! Some popular beginner projects include:
- Custom keychains or desk organizers
- Phone holders or stands
- Toy figures and puzzles
- Cookie cutters or plant pots
- Replacement knobs or hooks
If you can design it—or find it online—you can probably print it with PLA.