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Product

411 Filleting Filler
411 Filleting Filler - Image 2
411 Filleting Filler

Price range: $17.00 through $143.00

SKU N/A Category

West System 411 Fairing Filler

Available Sizes: 1L | 4L | 12L | 20L

West System 411 thickens resin for fairing, filling, and smoothing. It’s lightweight, easy to sand, and ideal for cosmetic work where you want a clean finish without adding extra weight.

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Why our customers use it:

  • Smooth Finish – Great for fairing and filling
  • Easy to Sand – No need to fight your sander
  • Low-Density – Won’t weigh down your project
  • Anti-Sag – Stays where you put it, even on vertical surfaces
  • Premium Microsphere Blend – West System Brand

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Works with: Epoxy, Polyester or Vinyl Ester
Mix rate: 2–10% by weight
Cure speed: Yes, using this filler will change the cure time of your resin (making it faster)

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Quick Tips:

  1. Mix resin and catalyst first (vinyl ester/polyester) or resin and hardener (epoxy)
  2. Add filler in scoops or handfuls, stirring as you go
  3. Stir smooth and steady.  Figure-eight with a stick or slow drill mixer
  4. Mix to a peanut butter consistency for fairing and filling
  5. Fill gaps just enough so a little would squeeze out if clamped
  6. Slightly overfill edges.  You’ll sand it back for a smooth finish

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Things our customers have used this product for:

  • Boat fairing and hull smoothing
  • Fibreglass repairs

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A few words on safety:

  • Wear gloves, eye protection, and a dust mask.  This stuff is fine powder and you don’t want it up your nose or in your eyes.
  • Work in a well-ventilated area.  It’s only fun until you’re in your forties and your lungs and ears don’t work right any more.
  • Mix in small batches.  Too much in a concentrated area can mean a smoking pot of resin.

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Got questions? Drop by the shop or give us a call.