PLA is appreciated for its consistent results and sharp detail, making it popular for design validation, display models, and lightweight functional parts. It’s stiff, has good dimensional accuracy, and holds fine edges well. However, it’s also more brittle than PETG or ABS, and not suitable for high-stress or high-temperature environments. PLA performs best for parts that are handled gently, kept indoors, and don’t require flexibility or impact resistance. Common uses include architectural models, aesthetic prototypes, hobby parts, or parts with detailed branding or logos.
The finish of PLA prints is smooth and often glossy, with sharp edges and minimal stringing. It supports very high visual precision and clean overhangs, which makes it a favorite for designers and visual prototyping. PLA doesn’t respond well to sanding or chemical smoothing and is prone to cracking if you attempt to drill or modify it post-print. It’s also sensitive to heat—softening around 60 °C—which makes it unsuitable for automotive or outdoor use. If you're prioritizing visual quality and ease of use over strength and flexibility, PLA is a reliable and cost-effective option.
Advantages
- Easy to print, even for beginners
- High visual detail and dimensional accuracy
- Smooth surface with a glossy finish
- Good for overhangs, small text, and logos
- Affordable and widely available
- Low risk of warping
Disadvantages
- Brittle – cracks under stress or bending
- Poor heat resistance (softens at ~60 °C)
- Not suitable for outdoor use (low UV stability)
- Difficult to sand or chemically smooth
- Not ideal for mechanical or load-bearing parts
Why Choose PLA for FDM Printing?
PLA is ideal for:
- Decorative or aesthetic parts
- Prototypes for design review or presentation
- Stands, holders, or covers used indoors
- Educational and hobby printing projects
It’s particularly suitable when you need:
- High detail resolution
- A clean finish with no post-processing
- Easy, reliable printing on any machine
- Parts that won’t face stress, heat, or sunlight
