PLA vs ABS Filaments in 3D Printing: A Comprehensive Comparison for Beginners and Experts

3D printing technology has revolutionized various industries, including gaming and prosthetics. However, one crucial component needed for 3D printing is the filament. Two popular choices in the market are PLA and ABS filaments, and this article aims to provide a comprehensive comparison between them.

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Firstly, let's understand what PLA and ABS filaments are. A 3D printer filament is a thermoplastic feedstock used in 3D printers. PLA stands for Polylactic acid and is made from plant starch through fermentation. This makes it eco-friendly, biodegradable, sustainable, and renewable. PLA is easy to use and relatively inexpensive, making it suitable for complex prints and ideal for beginners in 3D printing.

On the other hand, ABS stands for Acrylonitrile Butadiene Styrene and was one of the first plastics used for FDM 3D printing. It is known for its high resistance and durability, making it commonly used in rapid prototyping and additive manufacturing environments. ABS can withstand shattering when dropped or hit and is often associated with Lego bricks. However, ABS is more challenging to work with compared to PLA, especially for beginners.

When comparing PLA and ABS filaments, several properties come into play. PLA has medium strength but poor durability, while ABS boasts high strength and very durable capabilities. Printability is better with PLA, requiring less effort, whereas ABS requires more effort for printing. In terms of temperature resistance, ABS performs better than PLA. Shrinkage is minimal with PLA but prone to shrinkage with ABS. Additionally, PLA is biodegradable under specific conditions, while ABS is not. The glass transition temperature for PLA is 60°C, whereas for ABS, it is 105°C. PLA has lower density (1.3 g/cm3) compared to ABS (1.0 - 1.4 g/cm3). Lastly, PLA has low flexibility, while ABS has medium flexibility.

Moving on to the features of PLA, one standout characteristic is its biodegradability. PLA can degrade under certain conditions, making it environmentally friendly. It also offers excellent aesthetics due to its lower printing temperature requirements and becomes sticky when heated, allowing models to stick to the print bed and minimizing shrinkage. Another hidden gem in PLA filaments is their pleasant scent, often resembling candy or honey.

ABS, on the other hand, excels in temperature resistance, withstanding around 85°C. It lacks a melting point but has a glass transition temperature at 105°C, making it suitable for prints that require high-temperature exposure. However, ABS is more prone to warping and shrinkage during cooling, making it more challenging to work with. The main advantage of ABS lies in its durability; it is more resistant to heat, water, weight, stress, and impact compared to PLA.

When selecting between PLA and ABS filaments, consider the intended use of the print. PLA is ideal for aesthetic-focused models, such as architectural works, while ABS suits prints that require durability, like phone cases. The location where the 3D printer will be used is also important since ABS filaments emit more toxic fumes compared to PLA. If environmental impact is a concern, PLA filaments are the way to go, as they are biodegradable under strict conditions.

In terms of pricing, both PLA and ABS filaments offer similar options and are affordable.  provides competitive 3D printing services, including FDM, SDA, and SLS, using various materials and finishing options. Their team of experts is always available to provide technical support, design guides, and case studies.

To conclude, there is no definitive answer to the PLA vs ABS debate as it depends on individual needs. PLA is more common among beginners due to its ease of use, nice smell, and aesthetic appeal. It is also more environmentally friendly. However, ABS shines in terms of durability and technical functionality. Choose PLA for easy printing with a high aesthetic edge, while ABS is suitable for durable and technically functional prints.

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