SainSmart LW-PLA Lightweight Active Foaming Filament 1.75mm (1kg)

Engineered specifically for aeromodelling, drone components, and lightweight prop building, SainSmart LW-PLA (Lightweight PLA) Filament leverages advanced active foaming technology to dramatically cut part weight while maximizing material value. By expanding inside the hotend based on print temperature, this specialty 1.75mm filament allows you to fine-tune model density, wing loading, and structural strength on the fly.

Key Advantages

• Active Foaming Technology: Expands upon heating at printing temperatures above 210°C, achieving up to a 220% maximum foaming rate. Reduce print flow rates by up to 50% to yield roughly 2.2 times the printed volume out of a single 1kg spool compared to standard PLA.
• Ultra-Low Density (0.54 g/cm³): Achieves significant weight reduction in finished parts, drastically lowering stall speeds and wing loads for RC airplanes, fixed-wing aircraft, and FPV drones.
• Temperature-Controlled Custom Density: Easily adjust expansion levels throughout your print by tweaking temperature, print speed, and flow rates in your slicer—allowing you to create dense, rigid mounting points alongside featherlight aerodynamic surfaces.
• Satin Matte Surface & Layer Hiding: Micro-foaming action seamlessly fills surface gaps, leaving behind an exceptionally smooth, matte finish that renders layer lines nearly invisible while providing superior paint adhesion.
• Excellent Interlayer Bonding & Repairability: Offers solid layer-to-layer adhesion for enhanced impact resistance and straightforward field repairs using standard foam-safe adhesives.

Specifications & Compatibility

• Filament Diameter: 1.75mm
• Spool Net Weight: 1kg (2.2 lbs)
• Minimum Density: Down to ~0.54 g/cm³ (when fully foamed)
• Foaming Temperature Range: Expands actively between 210°C and 250°C
• Available Colors: Black, White
• Printer Compatibility: Compatible with standard 1.75mm FDM 3D printers equipped with direct drive or Bowden extruders.