About This

Low-density filler for epoxy fairing – 410 Microlight is a low-density filler designed to blend with WEST SYSTEM Epoxy resin and hardener to create a lightweight fairing compound for smoothing surfaces.
Creates a light, easily worked fairing putty – When mixed with epoxy, 410 forms a smooth compound that spreads easily and helps shape fiberglass, wood, and composite surfaces during repair and finishing work.
Effective for large fairing areas – The lightweight formula makes it well suited for fairing wide surfaces where a smooth, uniform finish is needed before final coating or painting.
Sands approximately 30% easier than most epoxy fillers – Epoxy thickened with 410 Microlight cures into a fairing compound that sands significantly easier than many other epoxy-based fillers.
Compatible with WEST SYSTEM epoxy systems – Blend 410 with any WEST SYSTEM 105 Resin and any 200 series hardener combination to create a lightweight fairing mixture; not recommended under dark paint or high-temperature surfaces.