Spectrum LW-ASA UltraFoam
Active Foaming Light-Weight ASA | 0.75kg
Spectrum LW-ASA UltraFoam is a revolutionary material specifically engineered for the RC aviation and aerospace industries. Leveraging UltraFoam technology, this filament undergoes an active foaming process when triggered by high nozzle temperatures, allowing you to print parts that are up to half the weight of standard ASA or ABS.
In addition to its ultra-lightweight properties, LW-ASA inherits the legendary durability of ASA, providing exceptional resistance to UV radiation and weathering. This makes it the ultimate choice for outdoor functional models that require structural rigidity without the aerodynamic penalty of heavy plastics.
Foaming occurs when the nozzle temperature exceeds 230°C. By increasing the temperature and decreasing the flow rate (extrusion multiplier) to 50-60%, you can produce parts that maintain their volume while dramatically reducing their density. This creates a fine-pored matte surface that is easily sandable and paintable.
☁️ Active Foaming Technology
Achieve a density as low as 0.55 g/cm³ by fine-tuning your extrusion settings at high temperatures.
☀️ UV & Weather Resistance
ASA-based chemistry ensures your models won't yellow or become brittle even after prolonged exposure to sunlight.
🎨 Professional Matte Finish
The foaming process naturally hides layer lines, resulting in a beautiful matte finish that requires minimal post-processing.
🪚 Sandable & Paintable
The honeycomb-like structure is much easier to sand than solid plastic, providing an ideal base for high-detail painting.
- RC Plane wings, fuselages, and control surfaces
- Ultra-lightweight drone frames and canopies
- Scale modeling (high detail, low weight)
- Aerospace functional prototypes
- Outdoor light-weight protective housings
- Buoyancy-controlled watercraft components
| Material Identity & Data | |
|---|---|
| Producer / Series | Spectrum Filaments / LW-ASA UltraFoam |
| Material Type | Light-Weight ASA (Acrylonitrile Styrene Acrylate) |
| Filament Diameter | 1.75 mm ± 0.05 mm |
| Color | DACK GREY / TRAFFIC BLACK / NAVY BLUE / LIGHT GREY / PURE WHITE / NATURAL / BLOODY RED / TRAFFIC RED |
| Net Weight | 0.75 kg |
| Max Density Reduction | ~50% (at 240°C - 260°C) |
| EAN / SKU | 5903318301501 / 80100 |
| Nozzle Temperature | 235 - 260°C (Foaming range) |
| Heated Bed Temperature | 90 - 110°C |
| Flow Rate (Extrusion Multiplier) | 45% - 65% (Required for light weight) |
| Layer Height | 0.2mm - 0.3mm (Optimizes foaming volume) |
| Drying Recommended | Yes (80°C for 4 hours) |
| Enclosure | Highly Recommended (to prevent ASA warping) |
| Net Weight [kg] | Spool Type | Protection | Traceability |
|---|---|---|---|
| 0.75 | Standard Round Spool | Vacuum Sealed + Desiccant | Full Laboratory Verification |
Access the official documentation for Spectrum LW-ASA UltraFoam:
* Expert Calibration Tip: To find the perfect flow rate for your printer, print a 20x20mm single-wall cube. Increase temperature until the wall thickness starts to expand due to foaming, then decrease the flow rate until the wall thickness returns to your nozzle diameter. This ensures the maximum weight saving without losing dimensional accuracy.
