Polymaker Light Weight PLA Filament 1.75mm Bright Green - Low Density

In this review the Polymaker Light Weight PLA Filament 1.75mm Bright Green is evaluated for hobbyists and model builders who need lower-mass prints without changing printer settings. The bottom line: it is a practical lightweight PLA that prints like regular PLA, offering good rigidity and layer adhesion while avoiding the foaming problems common to other low-density variants. For anyone wanting lighter parts for RC models, display pieces, or long prints where reduced material weight matters, this filament is worth testing.

Key Features

• Low density: With a density around 0.9g/cm3, it produces lighter parts than standard PLA while using familiar printing parameters.
• No foaming: Unlike some lightweight PLAs, this formulation does not foam during printing, reducing surface defects and nozzle issues.
• Same print settings as PLA: You can use standard PLA temperatures and speeds so there is no special tuning required for most printers.
• High rigidity and layer adhesion: Prints deliver stiff parts with consistent bonding, useful for structural elements and radio-controlled plane components.
• Matte finish and paintability: The bright green matte surface hides layer lines well and accepts paint for finishing and customization.
• Packaging and handling: The spool is dried, vacuum-sealed with desiccant and wound to limit tangles for reliable feeding.

Who It's For

This filament is aimed at 3D printing enthusiasts who want to reduce part weight without giving up the familiar handling of standard PLA. It suits makers of RC planes, lightweight prototypes, display models, or layered sculptures that benefit from a matte finish and easy post-processing.

Those who need maximum toughness, flexible filaments, or specialty engineering plastics should look elsewhere; this is a low-weight PLA optimized for rigidity and dimensional accuracy rather than impact resistance or high-temperature performance.

Pros & Cons

Pros

• Prints with standard PLA settings so setup is straightforward for most users.
• Low density reduces part weight while maintaining good rigidity for structural prints.
• Matte finish and consistent color make printed parts look clean and are easy to paint.
• Vacuum-sealed, dried packaging and careful winding reduce moisture and tangles.

Cons

• Some users report mixed results on perceived lightweight performance and occasional stringing on certain prints.
• A few customers find parts brittle for high-impact uses, so it is not a direct substitute for tougher materials.

Specifications

Our Verdict

The Polymaker Light Weight PLA 1.75mm Bright Green is a solid choice for makers who need lighter, dimensionally accurate prints without changing slicer settings. It delivers good rigidity and layer adhesion, a matte finish that hides layers, and reduced foaming during printing, making it good value for hobbyists and RC modelers who prioritize lower part weight over impact toughness.

Frequently Asked Questions

Do I need special slicer settings?
No, the filament prints with the same nozzle and bed temperatures and speeds as regular PLA, so standard PLA profiles are a good starting point.

Will it foam or clog my nozzle?
This PolyLite LW-PLA is formulated not to foam during printing, which helps avoid the common foaming-related nozzle problems seen with some lightweight PLAs.

How should I store the filament?
Keep the spool sealed with the desiccant when not in use and use the spool holes to help prevent tangles during prints.