3D printing filaments are used in fused deposition modelling (FDM) or fused filament fabrication (FFF) 3D printers. These filaments are thermoplastic polymers that are melted and extruded through a nozzle onto a build platform, layer by layer, to create three-dimensional objects.

There are several types of filaments available for 3D printing, each with its unique properties and characteristics:

PLA (Polylactic Acid) is popular due to its ease of use, minimal warping, and biodegradability. Though somewhat brittle, it comes in a wide array of colours and is ideal for intricate prints.

ABS (Acrylonitrile Butadiene Styrene) is valued for its durability and impact resistance, making it suitable for functional parts. However, it may emit fumes during printing and requires good ventilation. ABS also benefits from a heated bed to prevent warping.

PETG (Polyethylene Terephthalate Glycol) combines ABS’s strength with PLA’s printability. It offers good impact and chemical resistance with minimal warping, making it versatile for various applications, including mechanical parts.

Nylon is renowned for its strength, toughness, and chemical resistance. Commonly used for functional parts requiring high durability, Nylon can absorb moisture, necessitating proper storage and drying before printing.

Resin, utilised in stereolithography (SLA) and digital light processing (DLP) printers, offers exceptional detail and surface finish. Though post-processing is required, resin prints are ideal for intricate models, jewellery, and dental applications, providing smooth, polished results.