West System Brand Qualifies for Free Shipping West System Brand Microfibers 20 oz #403-28

WEST SYSTEM Microfibers 20 oz #403-28

$48.80

WEST SYSTEM Microfibers 20 oz #403-28

$48.80

WEST SYSTEM Microfibers 20 oz #403-28

$48.80

SKU: WSB-403-28

UPC: 811343011215

More about this item

WEST SYSTEM 403-28 Fiberglass & Repair

403 Microfibers is a fine fiber blend used as a thickening additive with resin and hardener to create a versatile, multi-purpose adhesive that's especially effective for bonding wood. This 20 oz container provides substantial material for extensive bonding applications where you need excellent gap-filling combined with superior wetting and penetrating capability.

Ideal for Wood Bonding:

Microfibers are particularly well-suited for bonding wood because the fiber-thickened epoxy maintains excellent wetting and penetrating capability even when thickened. This allows the adhesive to penetrate into wood grain for strong mechanical bonding while still providing the gap-filling properties needed for typical wood joints.

Excellent Gap-Filling Properties:

When mixed with epoxy, 403 creates a thickened adhesive that effectively fills gaps and voids in joints without sagging or running. This makes it ideal for bonding joints that may not fit perfectly, filling gaps in scarfed joints, and general assembly work where some gap-filling capability is beneficial.

Retains Wetting and Penetrating Capability:

Unlike some thickeners that can reduce epoxy's ability to wet out and penetrate surfaces, microfiber-thickened epoxy maintains excellent wetting properties. This ensures strong bonds by allowing the epoxy to penetrate into wood fibers and create mechanical interlocking in addition to adhesive bonding.

Multi-Purpose Adhesive:

While especially effective for wood bonding, microfiber-thickened epoxy is versatile enough for general bonding applications on a variety of materials. The combination of gap-filling and wetting properties makes it a go-to adhesive for many marine construction and repair situations.

Key Benefits:

  • Excellent for Wood: Maintains penetration into wood grain
  • Good Gap-Filling: Fills voids and imperfect joints effectively
  • Superior Wetting: Penetrates surfaces even when thickened
  • Multi-Purpose: Versatile adhesive for various materials
  • Fine Fiber Blend: Creates smooth, workable consistency
  • Off-White Color: Neutral appearance for various applications

Common Applications:

  • General wood bonding and joinery
  • Bonding scarfed joints in wood and plywood
  • Assembly work requiring gap-filling adhesive
  • Bonding wood components with imperfect fits
  • Multi-purpose structural bonding
  • Any application requiring penetrating, gap-filling adhesive

Mixing Guidelines:

Add 403 Microfibers to mixed epoxy resin and hardener gradually while stirring until you achieve the desired consistency. For general bonding, mix to a mayonnaise-like consistency that spreads easily but doesn't run. For thicker applications, add more filler.

This 20 oz container provides substantial material for extensive bonding projects and professional operations. The combination of gap-filling and wetting properties makes it an essential additive for professional-quality wood bonding and general adhesive applications.

Part Number: 403-28
UPC Code: 811343011215

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