Get maximum strength. Weldbond joins virtually all wood, hardboard,
chipboard or any porous composition board to each other or to other
materials including metal, glass and expanded polystyrene. Maximum
performance is obtained when Weldbond and material to be bonded
are both at room temperature of approximately 70 F (21 C). Not recommended
for use in construction of laminated structural beams.
With Weldbond, the joint is stronger than the wood! Weldbond contains
no fillers and is up to 3 to 4 times thicker than other wood glues.
Tack is developed very rapidly, yet it's still possible to adjust
the assembly into final position without difficulty. No heavy clamping
is involved. In most cases, hand pressure is enough to give a flexible
bond of enormous strength. Provided the wood is not warped, light
clamping is all that's required.
To apply: Use full-strength. Rub or brush an even
coat of Weldbond to all thoroughly cleaned surfaces to be bonded.
Clamp lightly. This eliminates any problem of glue rinse-out caused
by pressure, particularly important for hardwoods such as ash, walnut
and oak. For warped wood or hard dense wood where heavy clamping
is usually required, or when laminating, we recommend you use Weldbond
PROFESSIONAL WOOD GLUE. It's designed for fast-clamp release or
less than 30 minutes with a bonding strength of up to 3500 P.S.I.
For a smooth finish: All glue lines and drips
can be removed up to 20 minutes after gluing, by washing thoroughly
with warm water and sponge until surface is free of all glue. Let
dry; then stain for a uniform finish.
End-grain bonding: Prime both surfaces with a
solution of 1 part Weldbond and 5 parts water. Allow to dry and
make the final bond with full-strength Weldbond applied to both
surfaces. Light clamping only.
Economic strength: Even diluted, Weldbond provides
an exceptional bond. Try thinning it with up to 25% water to make
a lower-cost glue suitable for some applications such as dense wood
and glass to glass.
For plywood, hardwood, gypsum board and plastic laminates
on vertical surfaces: Prime porous surface with 1 part
Weldbond and 5 parts water. Let dry. To bond a smooth surface, use
concentrated Weldbond on both surfaces and bring together. If surface
is rough or uneven, use a plaster or cement slurry to take up the
unevenness. (To make a slurry, add plaster or cement to Weldbond
to form a paste.) Brace large boards or hold in place with nails
until set. Apply daubs no smaller than 2" in diameter, 16"
apart. If placing foam plastic under the boards, support with tack
strips, top and bottom, until set.
Ceilings and horizontal surfaces: Apply concentrated
Weldbond to both surfaces and bring together. If a ceiling is to
be covered with plywood, gypsum board or insul-board, the material
should be tacked, weighed down, taped, or braced until dry (approx.
1 to 2 hours depending on temperature and humidity).
Fix parquet and strip flooring: Apply concentrated
Weldbond to floor backing. To fix uneven surfaces, add a little
plaster or cement to Weldbond to form a paste. Porous floors must
be primed with 1 part Weldbond to 5 parts water.
Veneering: For extremely porous wood, seal surfaces
with a mixture of 1 part Weldbond, 5 parts water. Allow to dry.
Coat both surfaces with a mixture of 5 parts Weldbond, 1 part water.
Let dry fully, then press together with a domestic iron at wool
setting. For other woods, let Weldbond dry completely on the surface
to be veneered, then apply veneer with a hot iron at medium or wool
setting. Test iron by placing a piece of brown paper under it while
veneering. Doing this will allow a too-hot iron to scorch the paper;
not your veneer work.
Plastic Wood: Weldbond mixed with fine sawdust
(wood flour) makes an excellent plastic wood filler of tremendous
strength. Make up a paste with Weldbond and sawdust, or wood flour,
to required consistency. Add stained tint if required. Apply in
usual way, allow to dry thoroughly before doing any work on it.
Repeat if shrinkage occurs.
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