Acrylic glue is the
best glue for melamine. This water-based glue is
technically EVA (ethylene vinyl acetate). Two EVA
glues are Roo Products' RooClear and Franklin
Internationals' Titebond Melamine Glue. Although
EVA can be used on many materials, including vinyl,
rubber, metals, stone, and plastic, it is rarely
used on anything but melamine, because it forms a
soft bond with a tendency to creep.
Adhesive caulks like
Gloucester's Phenoseal can be used to bond wood,
fiberglass, carpeting, vinyl, tile, and concrete.
Adhesive caulks are waterproof and do not require
clamping. They are not as strong as most glues and
are more expensive than most construction
adhesives. Typical applications include attaching
kitchen backsplashes and exterior trim.
Construction adhesives are thick glues that come in
tubes and are applied with a caulk gun.
Construction
adhesives can be either solvent-borne or
water-borne. Typical construction adhesives include
Liquid Nails and OSI's PL400. A wide range of
construction adhesives are available for a variety
of applications. They are used to join wood, metal,
plastics, and rigid foam to wood or concrete.
Contact cement is
most often used to bond plastic laminate to a
substrate like particleboard. However, contact
cement can also be used to bond wood, hardboard,
plaster, plastics, metal, drywall, and fiberglass.
The bond is heat-resistant and water-resistant. To
use contact cement, both surfaces are coated and
allowed to dry until they are tacky. The surfaces
are then pressed together, and they bond
immediately without tight clamping. Because contact
cement contains a flammable solvent, it cannot be
used near an open flame.
Cross-linking PVA
glue is a weather-resistant type of yellow glue.
Cross-linking PVAs are very strong and versatile.
Titebond II and Elmer's Weather-Tite are
cross-linking PVA glues. Cyanoacrylate glue, also
called super glue, can bond a wide range of
materials, including wood, veneers, rubber,
plastics, and metals. Among its disadvantages are
its high cost and low tolerance for shock. For an
instant cure, add an accelerator like Zip Kicker.
Cyanoacrylate is a good choice for quick repairs --
for example, to repair a raised sliver on a cabinet
or door. Epoxy glues have two parts, a resin plus a
hardener. They cure by an exothermic chemical
reaction. Epoxy glues are expensive but form a very
strong, waterproof, heat-resistant bond. Epoxy is
excellent at filling gaps and requires only light
clamping. Epoxy can bond a wide range of materials,
including wood, fiberglass, concrete, glass,
leather, and plastics. Epoxy is often used for
anchoring masonry fasteners and repairing rotten
wood.
Hide glue gets its
strength from animal protein. It is made from
bovine leftovers like hide, hooves, and bones. Hide
glue's bond is not very resistant to moisture.
Franklin's liquid hide glue is more convenient to
use than traditional powdered hide glue, which
needs to be heated for use. (Incidentally, the bull
logo that Borden uses on Elmer's Glue-All has no
connection to the production of hide glue. Elmer
the Bull is a substitute for his mate, Elsie the
Cow. Elsie was Borden's logo for its original glue,
which was a casein glue made from skim milk.)
Hot-melt glue comes in solid sticks that are heated
in an electric glue gun.
| | There's more than one way to skin a
cat: Although a bottle of yellow glue and a
tube of construction adhesive will handle a
great many gluing needs, there are times
you might want to choose a special glue
from the wide range available. |
Hot-melt glue is
inexpensive and has gap-filling ability. It cures
almost instantly and is more often used for
temporary than permanent bonding. Polyurethane glue
is often used for exterior woodwork. It has almost
no solvent content. It cures by chemical reaction
with moisture present in the air or the materials
being glued. As it cures, it foams, helping to fill
gaps.
Polyurethane glue
can be used with wet wood and forms a strong
waterproof bond. It stains the skin and is
difficult or impossible to clean up. Gorilla Glue
and Excel Glue are typical polyurethane glues.
Polyvinyl acetate
(PVA) glues are a category of glues
including common white and yellow glue. PVA glues
are inexpensive and nontoxic.
Resorcinol glue is a
two-part glue containing a liquid resin and a
powdered hardener or catalyst. Like epoxy,
resorcinol cures not by drying but by an exothermic
chemical reaction. Resorcinol is a very durable,
strong, heat-resistant, waterproof glue used for
exterior applications. It has long been used for
making wooden boats and airplanes. Among its
disadvantages: It is relatively expensive, requires
long clamping time at high pressure, and leaves a
dark purple stain on wood. DAP Weldwood sells
resorcinol glue.
Silicone caulk can
be used as an adhesive. Silicone is suitable for
exterior use and can be applied at temperatures as
low as -55¡F. Silicone can solve awkward
bonding problems -- for example, it is used to
attach small access ramps to raised door
thresholds.
Urea formaldehyde
glues come either as a powder that is mixed
with water (for example, DAP Weldwood plastic resin
glue) or as a two-component glue (for example,
Unibond 800). The glue develops its bond when urea
and formaldehyde are mixed. Urea formaldehyde glue
is very strong and inexpensive; however, it can
only be used above 70F and requires tight
clamping.
White glue, which is
a polyvinyl acetate glue, is a common inexpensive
wood glue. Elmer's Glue-All is a typical white
glue. Although white glue does not form a
waterproof bond, it is cheap and very strong and is
suitable for many interior applications. Unlike
yellow glue, which has a shelf life of about a
year, white glue will stay fresh for years in a
sealed container. White glue cures by loss of
moisture. One of the disadvantages of white glue is
its tendency to gum up sandpaper.
Yellow carpenter's
glue, like white glue, is a type of
polyvinyl acetate glue. Typically, yellow glue is
thicker and tackier than white glue. The use of
yellow dye to distinguish improved varieties of PVA
glue from the earlier white varieties is a
manufacturer's convention; the color of the glue is
no indication of its quality. Most yellow glues are
more resistant to solvents and heat than typical
white glues. They are also less likely than white
glues to clog sandpaper. Titebond is a typical
yellow carpenter's glue.
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