If you're into 3D printing, you've probably heard that PLA filament is one of the most popular choices. But is it always the best option? With so many 3D printing filaments available, choosing the right one can make a big difference in print quality, durability, and functionality. This guide compares PLA filament to other popular options, helping you decide which best suits your needs.

What is PLA Filament?

PLA (Polylactic Acid) is a biodegradable thermoplastic made from renewable resources such as cornstarch and sugarcane. It's widely regarded as one of the easiest 3D printer filaments to print with, making it a favourite for beginners and experienced users.

Why Choose PLA Filament?

• Easy to Print - PLA has a lower melting point than other filaments, meaning it doesn't require a heated bed and prints at relatively low temperatures (around 190–220°C).
• Eco-Friendly - Derived from natural sources, PLA is one of the more environmentally friendly 3D printing filaments.
• Low Warping - Unlike some materials, such as ABS, PLA plastic filament doesn't significantly shrink as it cools, reducing the chances of warping.
• Good Print Quality – PLA produces smooth, detailed prints with minimal effort, making it ideal for aesthetic models, prototypes, and household items.

While PLA filament is fantastic for many applications, it does have limitations. It's not the strongest material, can become brittle over time, and softens at around 60°C, making it unsuitable for high-heat environments.

Comparing PLA to Other 3D Printing Filaments

PLA vs. ABS Filament

ABS (Acrylonitrile Butadiene Styrene) is another frequently used 3D printer filament, known for its durability and resistance to higher temperatures. However, printing with ABS can be tricky due to warping and strong odours during printing.

Pros of ABS:

• More impact-resistant than PLA
• Can withstand higher temperatures (softens around 105°C)
• Able to be post-processed with acetone for a smooth finish

Cons of ABS:

• Requires a heated bed to prevent warping
• Emits strong fumes, requiring good ventilation
• More challenging to print than PLA

Best For: Functional parts, enclosures, automotive and mechanical components.

PLA vs. PETG Filament

PETG (Polyethylene Terephthalate Glycol) is a great middle ground between PLA and ABS. It offers the ease of printing that PLA provides while having better strength and heat resistance.

Pros of PETG:

• Stronger and more flexible than PLA
• More heat-resistant (softens around 80°C)
• Resistant to moisture and chemicals
• Less brittle than PLA plastic filament

Cons of PETG:

• Prone to stringing if print settings aren't optimised
• Not as easy to print as PLA

Best For: Functional prints, food-safe containers, outdoor applications, and mechanical parts.

PLA vs. TPU Filament

TPU (Thermoplastic Polyurethane) is a flexible filament used to print rubber-like parts. Unlike PLA, TPU is highly elastic and impact-resistant.

Pros of TPU:

• Very flexible and durable
• Resistant to oils and chemicals
• Excellent for parts requiring impact absorption

Cons of TPU:

• Requires slow print speeds and precise settings
• Can be tricky to feed through some extruders

Best For: Phone cases, gaskets, wheels, and other flexible components.

PLA vs. ASA Filament

ASA (Acrylonitrile Styrene Acrylate) is similar to ABS but with improved UV and weather resistance, making it ideal for outdoor applications.

Pros of ASA:

• UV resistant (won't degrade in sunlight like PLA)
• More durable than PLA
• Less prone to warping than ABS

Cons of ASA:

• Requires a heated bed and enclosure for optimal prints
• Emits strong fumes during printing

Best For: Outdoor parts, automotive applications, and signage.

Which 3D Printing Filament Should You Use?

The best filament for you depends on your project's requirements:

• For beginners and general-purpose prints, PLA filament is the easiest and most hassle-free choice.
• For strength and durability, PETG or ABS may be better options.
• For flexible prints, TPU is your best bet.
• For outdoor applications, ASA is more resistant to weather and UV damage.

Optimising Your Prints

Whatever filament you choose, getting the best results requires proper print settings. Here are some quick tips:

• Use the correct nozzle temperature - If it is too low, the layers won't bond properly; if it is too high, you'll get excessive stringing.
• Calibrate your print bed – Ensuring proper first-layer adhesion prevents warping and print failures.
• Store your filament properly – Many 3D printing filaments, including PLA plastic filament, absorb moisture, leading to print issues. Keep them in airtight containers with desiccants.

Summary

Choosing between PLA filament and other 3D printing filaments all comes down to what you need for your project. PLA is a fantastic choice for most users due to its ease of use and excellent print quality, but if you need something stronger, more flexible, or heat-resistant, alternatives such as PETG, ABS, or TPU might be the way to go.

If you're looking for high-quality 3D printer filament, including PLA plastic filament and other materials, check out our range at RAW3D. We stock premium brands and offer local pick-up in WA so you can get printing faster!