West System Adhesive Fillers vs.
Fairing Fillers
Fillers are used to thicken
the basic resin/hardener mixture for specific applications. Each filler
possesses a unique set of physical characteristics, but they can be
generally categorized as either Adhesive (high-density) or Fairing
(low-density).
Adhesive filler mixtures cure to a strong, hard-to-sand plastic useful
in structural applications like bonding, filleting and hardware bonding.
Fairing filler mixtures cure
to light, easily sandable material that is generally used for cosmetic
or surface applications like shaping, filling or fairing.
ADHESIVE FILLERS
403 Microfibers
403 Microfibers, a fine fiber blend, is used as a thickening additive
with resin/hardener to create a multi-purpose adhesive, especially for
bonding wood. Epoxy thickened with microfibers has good gap-filling
qualities while retaining excellent wetting/penetrating capability.
Color: off-white.
eboatworks Price
6 oz.
Microfibers $10.20
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20 oz.
Microfibers $18.70
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20 lb.
Microfibers $149.95
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404 High-Density Filler
404 High-Density filler is a thickening additive developed for maximum
physical properties in hardware bonding where high-cyclic loads are
anticipated. It can also be used for filleting and gap filling where
maximum strength is necessary. Color: off-white.
eboatworks Price
15.2 oz.
HD filler $12.50
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45.6 oz.
HD filler $25.95
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405 Filleting Blend
This strong, wood-toned filler is good for use in glue joints and
fillets on naturally finished wood. It mixes easily with epoxy and lets
you create fillets that are smooth and require little sanding. Its color
is a consistent brown, so 405 can be used to modify the shade of other
WEST SYSTEM fillers.
eboatworks Price
8 oz.
Blend $12.95
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406 Colloidal Silica
406 Colloidal Silica is a thickening additive used to control the
viscosity of the epoxy and prevent epoxy runoff in vertical and overhead
joints. 406 is a very strong filler that creates a smooth mixture, ideal
for general bonding and filleting. It is also our most versatile filler.
Often used in combination with other fillers, it can be used to improve
the improve strength, abrasion resistance, and consistency of fairing
compounds, resulting in a tougher, smoother surface. Color: off-white.
eboatworks Price
1.7 oz.
Silica $9.95
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Price 5.5 oz.
Silica $18.95
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FAIRING FILLERS
407 Low-Density Filler
407 Low-Density filler is a blended microballoon-based filler used to
make fairing putties that are easy to sand or carve. Reasonably strong
on a strength-to-weight basis. Cures to a dark red/brown color.
eboatworks Price
4.7 oz.
LD filler $12.95
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12 oz.
LD filler $31.95
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14 lb.
LD filler $249.95
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410 MicrolightTM
410 MicrolightTM is the ideal
low-density filler for creating a light, easily-worked fairing compound
especially suited for fairing large areas. Microlight mixes with greater
ease than 407 Low-Density filler or microballoons and is approximately
30% easier to sand. It feathers to a fine edge and is also more
economical for large fairing jobs. Not recommended under dark paint or
other surfaces subject to high temperatures. Cures to a tan color.
eboatworks Price
2.3 oz.
ML filler $13.95
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4.2 oz.
ML filler $24.95
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4 lb. ML filler $195.95
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