3D printing filament ROSA3D ASA LW UltraFoam Dark Grey 0.75 kg refill Spectrum

ROSA3D ASA LW UltraFoam Dark Grey 0.75 kg refill Spectrum is a lightweight ASA thermoplastic filament formulated for 3D printing applications that require improved weather resistance and reduced part weight. The foamed structure lowers material density while retaining the chemical resistance and UV stability characteristic of ASA. Supplied as a 0.75 kg refill spool in Dark Grey, this filament is intended for printers configured to use lightweight or foaming-compatible ASA materials and for users who need stiffer, durable parts with less mass.

Advantages

The UltraFoam formulation combines standard ASA properties—UV resistance, good dimensional stability, and chemical resistance—with a lower density due to controlled foaming during extrusion. This results in lighter parts without a proportionate loss of rigidity. The Dark Grey color provides neutral, professional-looking prints that mask minor surface imperfections. The 0.75 kg refill spool format reduces packaging waste and is convenient for frequent users or continuous production needs.

Suitable for

• Functional prototypes and mechanical parts where reduced weight is beneficial
• Outdoor components exposed to sunlight and varying weather conditions
• Architectural models and display pieces requiring improved stiffness
• Lightweight housings, brackets, and fixtures with chemical exposure

Key specifications

• Material type: ASA (Acrylonitrile Styrene Acrylate) with UltraFoam lightweight formulation
• Net filament weight: 0.75 kg refill spool
• Color: Dark Grey (Spectrum)
• Physical structure: Foamed/low-density filament for reduced part mass
• Properties: UV resistant, chemically resistant, improved rigidity-to-weight ratio

How to use

Load the 0.75 kg refill spool into a 3D printer compatible with ASA materials and, if applicable, lightweight or foaming filaments. Use a heated bed and an enclosed or well-controlled print chamber to reduce warping and improve layer adhesion. Print settings such as nozzle temperature, bed temperature, print speed, and flow may require adjustment compared with standard ASA to account for the foamed nature of the filament; begin with manufacturer-recommended ASA ranges and fine-tune by test prints. Allow printed parts to cool gradually in a controlled environment to preserve dimensional stability.

Usage recommendations

For best results, use an enclosed printer or heated chamber, enable good bed adhesion methods, and perform calibration prints to determine optimal temperature and flow settings for the foamed filament. Post-processing such as light sanding or solvent-free cleaning can improve surface appearance; avoid aggressive chemical treatments that could compromise the foamed structure.