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West System Filler Selection Guide


Filler Selection Guide

USES
Resin/Hardener mixture thickened with a Filler
Use description—desired characteristics

ADHESIVE FILLERS

FAIRING FILLERS

Highest density
Highest strength

Lowest density
Easiest sanding

404
High-density

406
Colloidal Silica

403
Microfibers

405
Filleting Blend

407
Low-density

410
Microlight™

Bonding Hardware—Increased fastener interface and hardware load capability—maximum strength

   

General Bonding—Join parts with epoxy thickened to create a structural gap filler—strength/gap filling

 

Bonding with Fillets—Increase joint bonding area and create a structural brace between parts—smoothness/strength

 

Laminating—Bond layers of wood strips, veneers, planks, sheets and cores—gap filling/strength

 

Fairing—Fill low areas and voids with an easily shaped and sanded surface filler/fairing compound—sandability/gap filling

       

Filler suitability for various uses  =excellent, =very good, =good, =fair, (no stars)=not recommended.

Selecting Fillers
As a rule, use higher-density fillers when bonding higher-density materials such as hardwoods and metals. Any of the adhesive fillers are suitable for most bonding situations. Your choice of a filler for general use may be based on the handling characteristics you prefer. Fillers may also be blended to create mixtures with intermediate characteristics.

Gougeon Brothers Copyright © 2000, Gougeon Brothers, Inc.  All rights reserved.
Last Modified on Tuesday, December 05, 2000.
WEST SYSTEM and EPOXYWORKS are registered trademarks of Gougeon Brothers, Inc. Bay City, Michigan, USA.


For further guidance on mixing additives with epoxy, see
West System Guide - Adding Fillers & Additives

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