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Waterbase Finishing Tips
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These are general instructions to guide you through the finishing
process using water based products. Always refer to the manufacturer's
specific instructions. Application guidelines for each manufacturer may
vary.
This information has been developed to assist you in selecting the best
finish for your project. Application techniques differ between oil based
and water based products.There are several factors that may influence
your choice.
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Strong, Clear Vibrant Colors
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Nothing produces beautiful
colors better than water based finishing products. Red, blues and greens
and everything between produce vibrantly in water based finishes.
Whether you want brilliant hues to enhance a neutral room, a touch of
whimsy or the comfort of classic colors; furniture color is the perfect
venue for self expression. With unfinished furniture, the possibilities
are endless.
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Top Coat Color |
Water based top coats are
milky white in the can, dry to a crystal clear finish, and will remain
clear throughout the life your project. Oil based top coats have a
slight amber color in the can, and dry to a clear finish which can
darken over time. |
Clean Up |
Water based finishes clean
up conveniently with water. |
Non-Combustible |
Water based products are
non-combustible, unlike oil based products. |
Recommended Finish For Open Grained
Woods
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Water based products are a
topical finish. We recommend using them on any woods that penetrate
easily, such as pine or aspen, to produce a more even looking finish.
Conversely, oil based stains tend to penetrate the wood more, and can
bring out more variation in the final result. With that said, remember
you are applying finish to parts of a tree, and every piece will look
different!
Click here for a wood species chart (14.7 kb pdf)
or just use the fingernail test. If your fingernail dents the surface,
you have a soft wood, like pine or aspen. |
Sun Light |
The sun affects everything.
If left in strong sunlight, the pigments and dyes in Wood Stains will
fade like everything else. However, water based Milk Paints paints are
an ideal exterior product and hold color quite well over time. |
Grain Raise |
Water based products
produce more grain raising than oil based finishes - they do require a
different finishing technique. Before applying the finish, spray the
project with water or rub down with a damp cloth. Allow the wood to dry
and then sand lightly to remove the raised grain. This conditions the
wood to accept water based finishes. You will get a perfect finish by
following the application instructions. The amount of grain raising is
dependent on the type of wood species. |
Dry Time, Temperature & Humidity
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Water based products dry
faster so your project can be completed faster. Dry times are
temperature and humidity dependent. Dry time is normally 2-4 hours under
ideal conditions (70° and 70% humidity). Cooler temperatures or
higher humidity will prolong dry time to 8-10 hours. Water based
finishes must be applied at temperatures above 65 F. Cooler temperatures
will adversely affect how the finish will level and harden, causing
fish-eyes or craters. If it is cold enough to wear a sweater it is too
cold to apply a water based finish. Good ventilation, air movement
and higher temperatures will accelerate dry time. If working in high
temperatures or low humidity, water based finishes may be thinned with
10-20% water or General Finishes Extender (3 to 6 oz. per quart) to
improve open time for application. High humidity can extend the dry time
but will not harm the final finish. |
Mixing Custom Colors & Tinting
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You can create unique
colors by mixing any two shades of water based products. Be sure to
write down exactly how much of each color is in the mix and mix enough
to complete the entire project. Tinting may be accomplished by
adding 2 oz of Wood Stain and 2 oz. of water to a pint of Top Coat (or 4
oz. of each to a quart). Mix the water and stain together first, then
add this mixture to tint the Top Coat. Stir well. Do not mix water
based products with oil based products. |
Cure Time |
Allow the final Top Coat to
cure for a period of 14 days to reach optimum hardness. You may use your
furniture sooner. Just treat it with special care during the curing
period. |
Maintenance |
To maintain the finish
clean surface with a damp washcloth and wipe dry. Cleaners such as
Pledge and Murphy's Oil Soap are not recommended because they leave a
dull residue on the finish. Water based surfaces may be cleaned with
a damp cloth or General Finishes Orange Oil. Do not use household
cleaners or window cleaners. Paste wax is not recommended because it
builds up and yellows, thus becoming a maintenance problem. Top Coats
may be recoated at any time in the future. Remove any grease or dirt,
lightly sand with #320 or finer grit sandpaper, and then apply another
coat. |
Coverage |
150 sq. ft. per quart. |
Storage |
Keep from
freezing. |
Spraying |
While both oil based and
water based products can be sprayed, water based products really spray
like a dream with water clean up. Water based topcoats are self leveling
and dry quickly.
For more information on spraying, click here. |
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For more details regarding preparation,
supplies, work area tips, etc. visit our
Preparation
page.
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All surfaces should
be clean and free from all dirt and oils.
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Sanding is a
progressive procedure. Do NOT start sanding with very fine sandpaper
on unfinished wood. Prepare the surface by using medium sand paper
first, and then proceed to finer grades. Water based finishes need a
smoother surface than oil based finishes, but do not over sand or
you may seal the wood so much that it will not take a finish. Sand
raw wood in the direction of the grain starting with a coarser grit
sand paper such as #120 sandpaper, and finish the final sanding with
a fine grit sandpaper such as #180 or #220. End-grains (areas where
the wood has been cut against the grain), such as the front side of
a table, tend to soak up more stain than other surfaces. Give
end-grain areas an additional sanding to control the absorption of
stain. Refer to our sanding tutorial for more information.
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We
recommend minimizing the grain raise, especially on hardwoods such
as Oak and Ash. After completing preparation sanding and before
applying the finish, spray the project with water or rub down with a
damp cloth. Allow the wood to dry and then sand lightly to remove
the raised grain. This conditions the wood to accept water based
finishes.
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Option for wood
stains: Soft woods such as Pine and Aspen absorb wood stain at an
uneven rate and may respond better to staining if the wood is
pre-sealed. A natural (clear) stain can be applied to raw wood to
condition the surface for uniform penetration of the stain.
Pre-sealing will cause the final stain to be lighter. Always test
your color on a hidden part of the furniture! Allow the natural
clear stain to dry 1 hour before applying your final stain color.
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Remove dust with an
air hose, damp cloth or "oil free" tack cloths. Do not use oil based
tack cloths when using water based finish. Most tack cloths contain
oil and will contaminate the surface.
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Do NOT use steel
wool when preparing wood for water based finish, as steel particles
will cause rust spots.
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There are two
methods to fill nail holes with wood putty: 1) fill holes before you
stain using putty that dries
hard and can be sanded and stained, or 2) stain the wood, apply one
Top Coat, and then use water based color putty that matches the
stain.
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Lots of good quality paper towels or
lint-free cloths for wiping. Do not use tee shirts with water based
products – they do not absorb well.
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Foam brushes or latex paint pad
applicators and a bristle brush to pull stain out of corners. You
must brush or wash paint pad applicators before use to remove loose
bristles. Note: purchase a brush that will fit in the can.
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#120, #180 or #220 grit sandpaper for
sanding raw wood.
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#320 or #400 grit sandpaper or superfine
sanding sponges for buffing between Top Coats. Do not use steel wool
because steel particles left behind will rust.
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Soap and water for clean up.
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Paper plates and aluminum foil to make
disposable paint trays.
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Helpful Tips
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Remove hardware
from furniture. Taking a little extra time to remove backs of
cabinets, drawer fronts etc, will make staining much easier.
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To minimize grain
raising, complete surface preparation sanding and prior to applying
Top Coat, dampen the wood with a wet sponge or spray bottle. Allow
the wood to dry completely and lightly finish sand again with #180
to #220 grit sandpaper. Do not sand through the grain raise layer.
This conditions the wood to accept water based finishes.
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To get a consistent
stain on soft woods such as Aspen, use Natural Stain as a pre-stain
conditioner. Apply Natural Stain, wipe off evenly, wait 30 to 60
minutes and apply your stain color. Always test the color on the
underside of the project before you begin. It is your responsibility
to insure that the color is what you want.
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All top coats
(water, oil, lacquer, wax, etc.) may be used over Water Based Stains
if they have dried properly. All Wood Stains may be intermixed to
create custom colors or may be lightened by adding Natural Stain.
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A second coat of
stain will produce a slightly darker color.
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If working in high
temperatures or low humidity, Wood Stains may be thinned with 10-20%
water or General Finishes Extender (3 to 6 oz. per quart) to improve
open time for application.
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Tinting may be
accomplished by adding 2 oz of Wood Stain and 2 oz. of water to a
pint of Top Coat (or 4 oz. of each to a quart). Mix the water and
stain together first, then add this mixture to tint the Top Coat.
Stir well.
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Use only tack
cloths made for water based products (containing no linseed oil).
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Always
stir the content= well. Stirring reduces the thickness of the stain
and distributes pigments that may have settled to the bottom of the
can.
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It is essential to
apply a wet, liberal amount of stain with a foam brush or a latex
paint pad applicator to insure easy workability. If too little stain
is used, the surface can dry too quickly causing an uneven
appearance.
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Divide your project
into manageable sections (top, side, drawer, door).
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Stain a complete
section and wipe off the excess evenly with the grain using paper
towels or a clean cloth. Check for missed spots and lap marks before
moving to the next section. Immediately correct lap marks by
rewetting the entire working area with stain and wiping the excess
off.
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Sanding between
coats of any stain or top coat is referred to as Buffing. We do NOT
recommend buffing between coats of stain because you may remove an
area of stain that cannot be re-blended. If you must buff because
you have imperfections that need to be smoothed out, do so with
caution using a superfine sanding pad or #320 or #400 grit
sandpaper. Do not buff prior to the first application Top Coat.
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On most projects
three or four coats of Top Coat is just right. On projects receiving
extra wear such as table
and desk tops, additional coats will add more protection. Tip: use
our High Performance Polyurethane for even more durability.
For more instructions about applying Top Coats, click here.
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Water based Milk Paints can be used with
glazes and water based stains to create decorative finishes such as
distressing, antiquing, faux marble, rag rolling, or color washing.
Creating these layered techniques requires using layers of color
combined with sanding techniques. The results are stunning and well
worth the effort.
Distressing is the technique of
marking the wood to give the character of generations of use. The most
common technique is distress sanding. Other tools can be used to give
further character to wood; hammers, nails, screws, old hardware,
literally anything you can pound into the wood that would leave an
imprint. Then start hammering away. If it's been a long week and you
need a lift, start a little character therapy project for yourself. Get
rid of all that stress and distress a piece of furniture at the same
time!
Antiquing is another form of
distressing using sanding techniques, often followed by glazing to give
the appearance of an antique piece of furniture that has been well taken
care of over the years but, has slight natural wear and discoloration on
the doors, edges, or sides.
Glazing is the process of applying a
translucent color to the surface, and then rubbing off the excess glaze.
In the following examples, several layers of Milk Paints Paints, Glazes
and Top Coats are combined in the tradition of old world craftsmen to
create unique decorative finishes in any color palette. The process goes
fast as water based finishes dry much more quickly than oil based
finishes. Choose from more designs available at our
Decorative and Faux Finishes Showroom or create your own. |
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1. Two coats of Autumn Haze Milk Paint
sanded through
2. Water based topcoat to prevent color
blending
3. Yellow Ochre Glaze
4. Final top coats |
1. Two coats Sage Green
2. Water based topcoat to prevent color blending
3. Winter White Glaze
4. Final top coats |
1. Two coats of Millstone Milk Paint sanded through
2. Water based topcoat to prevent color blending
3. Van Dyke Brown Glaze
4. Final top coats |
1. Two coats of Brick Red Milk Paint
2. Water based topcoat to prevent color blending
3. One or two coats of Basil Milk Paint sanded through
4. Yellow Ochre Brown Glaze
5. Final top coats |
1. Two coats of Brick Red Milk Paint
2. Water based topcoat to prevent color
blending
3. Espresso Wood Stain
4. Final top coats |
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Application of General Finishes Milk
Paints
Do I Need A Primer?
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Although Milk
Paints can be applied directly onto bare wood, the use of primer is
recommended for heavy grained wood such as Oak, Pine or Parawood,
especially with light colors.
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Most dark Milk
Paint colors do not need a primer. If you want a smoother finish,
just add a third coat.
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Primer may also be
put over previous stains and finishes. Sand glossy surfaces with
#120 grit sandpaper before starting. Always test a small area first
to make sure the primer and paint adhere to the original surface.
Hand Application of General Finishes Milk
Paints
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Remove hardware
from furniture. Taking a little extra time to remove backs of
cabinets, drawer fronts etc., will make staining much easier.
Milk Paints may be intermixed to create additional colors. Snow
White or Antique White will soften darker colors.
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If working in high
temperatures or low humidity, Milk Paints may be thinned with 10-20%
water or General Finishes Extender (3 to 6 oz. per quart) to improve
open time for application.
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If working over
existing paint or finish, always test a small area to make sure
paint will adhere. Sand glossy surfaces with #120 grit sandpaper
before proceeding.
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Make disposable
paint trays by covering paper plates with aluminum foil.
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Test the color on
the underside of the project. It is your responsibility to insure
that the color is what you want.
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Always stir the
content= well. Stirring distributes pigments that have settled to
the bottom of the can.
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Paint on a wet,
liberal coat with a wide foam brush, synthetic brush, or paint pad
applicator. If too little paint is used, the surface can dry too
quickly causing an uneven appearance.
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Let dry 2 to 4
hours before applying another coat.
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We recommend two to
three coats of paint. If paint is not covering after 2 coats, you
are not applying heavily enough.
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If using different
colors of Milk Paint over one another (i.e.-when creating antique
finishes) always apply a coat of Top Coat in between the colors to
prevent color blending.
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Dry time is
normally 2-4 hours under ideal conditions (70° and 70% humidity).
Cooler temperatures or higher humidity will prolong dry time to 8-10
hours. Good ventilation, air movement and higher temperatures will
accelerate dry time.
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Sanding between
coats of any stain, paint or top coat is referred to as Buffing.
Buff between each coat of Milk Paint with a superfine sanding
sponge, #320 or #400 grit sandpaper.
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Milk Paint dries
with a low luster sheen. Although it can be used as a one-can
finish, we recommend one application of Water Based Top Coat for
increased durability or to increase sheen. It is not necessary to
buff after applying final Top Coat.
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If using Milk Paint
in an outdoor application, do not Top Coat.
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Use Milk Paint for all your outdoor
furniture. It is not just an interior product! Classic
interior/exterior paints for use with furniture, crafts, and
cabinets. Milk Paint is a sturdy outdoor finish perfect for
outdoor furniture. Uniquely engineered from the latest paint
technology, Milk Paints can be used directly from the can to
produce a high quality satin sheen. No mixing messy powders! |
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Glaze Effects are translucent water based
colors that may be used over any water based stain or paint to create
beautiful decorative finishes such as distressing, antiquing, Strie’,
marble effects, shabby chic, burnishing, color washing, rag rolling and
wood graining.
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Snow White Glaze over
Antique White Milk Paint |
Yellow Ochre Glaze over
Antique White Milk Paint |
Red Sienna Glaze over off
Antique White Milk Paint |
Van Dyke Brown Glaze over
off-white Furniture Paint |
Burnt Umber Glaze over
off-white Furniture Paint |
Pitch Black Glaze over
off-white Furniture Paint |
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Always test the
color on the underside of the project. It is your responsibility to
insure that the color is what you want. Do not practice on your new
furniture!
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Always stir the
content= well. Stirring distributes pigments that have settled to
the bottom of the can.
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Option: Before
applying glaze you have the option of Top Coating first, which will
help you control the amount of color and facilitate the spreading of
glaze over the surface. The Top Coat layer is smoother and less
absorbent, allowing the glaze to slide across the surface. If you
want a rustic look with more color, skip the Top Coat layer and
apply the glaze directly to the paint.
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Start with two base
coats of Milk Paint following application instructions shown above.
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Let the final base
coat dry 2-4 hours.
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Pour Glaze color
into a paper plate covered with aluminum foil or painter’s tray.
Working one small section at a time, apply the Glaze liberally with
a foam brush, synthetic brush or paint pad over entire section,
keeping the surface wet with Glaze.
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Wipe off excess
with absorbent wiping cloths or paper towels to achieve desired
look. Do not use Tee-shirts.
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If you want to
rework a section, simply rewet the surface with Glaze.
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Work quickly, so
that the Glaze color does not dry before finishing a section. If
necessary, mask off smaller sections around raised areas such as
bead board and moldings. Glazes dry fairly quickly, so plan your
sections before beginning.
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If working in high
temperatures or low humidity, Glaze Effects may be thinned with
10-20% water or General Finishes Extender (3 to 6 oz. per quart) to
improve open time for application.
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Let dry 2-4 hours.
Apply water based Top Coat for additional durability or to increase
sheen.
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If you are applying
Water Based Top Coat over an oil based stain, allow the oil stain to
dry a minimum of 48 hours under ideal conditions.
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Water based top
Coats are milky white in the can, but will dry to a crystal clear
finish. Stir content= well to insure that all the ingredients are
mixed together.
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Apply with a foam
brush, latex paint pad applicator, or by spraying.
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Apply Top Coats
liberally using smooth even strokes working in the direction of the
grain. Use enough material to provide a wet film. Do not over brush!
Top Coats self level beautifully.
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Top Coats have
“burn in” characteristics and may slightly lift some of the color
during the application of the first coat (particularly red colors).
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On most projects
three or four coats of Top Coat is just right. On projects receiving
extra wear such as table
and desk tops, additional coats will add more protection. Tip: use
our High Performance Polyurethane for even more durability.
Dry Time of Top Coats
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Dry time is
normally 2-4 hours under ideal conditions (70° and 70% humidity).
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Cooler temperatures
or higher humidity will prolong dry time to 8-10 hours.
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Good
ventilation, air movement and higher temperatures will accelerate
dry time.
Buffing Top Coats
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It is important to
buff in between each application of Top Coat for the smoothest
possible finish.
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After Top Coat has
dried, buff between each application with #320 or #400 grit
sandpaper or superfine sanding sponge.
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Remove dust with a
clean cloth.
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Do not
buff prior to the first application Top Coat. It is not necessary to
buff final Top Coat.
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Warranty
General Finishes' products should be tested
to your complete satisfaction before using. General Finishes will be
responsible only for the cost of the product. General finishes will not
be responsible for any other costs such as labor costs, damage costs, or
replacement costs. |
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General Finishes water based products can be
sprayed through compressed air, HVLP, airless or C.A.S. units. Surface
Preparation: All surfaces should be clean and free from dirt and oil and
sanded as per instructions above.
Spray Application of General Finishes
Water Based Finishes
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Water Based
PolyAcrylic is ready to spray from the container. If necessary in
hot or dry climates, reduce 10 to 20% with water or General Finishes
Extender to extend the open time.
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Pre Sealing : Soft
woods such as Pine and Aspen absorb stain at an uneven rate and may
respond better to staining if the wood bas been pre-sealed. Natural
stain can be applied to raw wood to condition the surface for
uniform penetration of the stain. Pre-sealing will cause the final
stain to be lighter. Always test your color on a hidden part of the
furniture! Allow the Natural stain to dry 1 hour before applying
your final stain color.
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If you are using a
sprayer that has been used for oil based or lacquers, clean the unit
thoroughly and rinse with warm water before using. Apply a thin coat
first that will dry and harden faster. Sand this first coat down to
a smooth base on which to build your finish coats. With water based
finishes it is better to spray 2 thin coats rather than 1 heavy
coat.
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Spray Tips:
Recommended for Wood Stains and Top Coats. Fluid tip sizes should
be as follows:Compressed air - .040,
HVLP - .051, Airless - .009. Recommended Tips for Milk Paint.
Compressed air - .050, HVLP - .072, Airless - .013. Air caps should
be medium size. Contact your supplier to verify proper tip sizes for
your specific equipment.
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Always strain
material through a medium to fine mesh filter before spraying.
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Spray medium wet
films at 3-5 wet ml thickness.
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Reduction: If
spraying the product as a stain in order to allow the grain to show
through, reduce 10 to 20% with water or General Finishes Extender.
If spraying as a paint, do not reduce. For example, you may wish to
spray Wood Stains on for a painted look. In this instance, do not
reduce. It is generally not necessary to reduce Milk Paints, but
they also may be reduced 10 to 20% with water or GF Extender.
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Practice makes
perfect! If you have never sprayed finishes before, take a large
piece of cardboard and practice your technique first. Spray water on
the cardboard to learn how the gun works. Check your fluid settings
and adjust the controls to get comfortable with the spray angles and
to develop your technique.
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Keep your gun at a
90* angle, 6-8" from the surface. On large flat areas, use wet, even
patterns 6 to 8’ wide. Over lap each pass 25% to conceal lines.
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For narrow
surfaces, reduce the fan pattern to 2-3" to reduce overspray. Break
your work into sections
such as dresser top or drawer fronts. Spraying too large of an area
can result in a textured grainy surface. A correctly sprayed finish
should appear even and glossy. It is important to spray enough
material to allow proper flow and leveling of the finish.
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General Finishes recommended spray
equipment is
Accuspray HVLP guns and turbines by 3M.
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Trouble Shooting Guide for Spraying Water
Based Finishes
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Rough, dry surface. This is
called dry spray. You may have sprayed too lightly. Re-sand the
finish with #320 paper and apply a heavier coat. Keep your gun at
6-8" from the surface.
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Dimples in the finish. This is
called orange peel, caused by spraying in temperatures that are too
cool. Cooler temperatures will adversely affect how the finish will
level and harden. Water based finishes must be applied at
temperatures above 65 F. If it is cold enough to wear a sweater it
is too cold to apply a water based finish. The surface of the wood
must also be warm. If you turn the heat on when you enter your shop
in the morning, the air heats up quickly but your furniture will
still be cold for some time. Check the surface to see if it is warm.
Also, check the temperature of the finish. Warming cold finish by
setting the can next to a heater or setting the container in some
hot water for 5 minutes will improve the ease of application. Note:
Larger dimples are called "fish-eyes" or "craters". Cool
temperatures can cause these, but the more likely source is
contamination of the finish with either wax or silicone
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Blush. Blush, the term for a
cloudy, milky appearance in the finish, has two causes. The most
common reason is incompatible stain. For example, using a water
based top coat over a heavy oil based stain. When the top coat is
applied, the oil in the stain seeps up through the finish and reacts
with the acrylic causing a chemical blush. To prevent this, use a
quick drying water based stain. If you choose to use oil based
stain, seal the stain with a coat of shellac or lacquer sealer. This
will provide a barrier between the oil and the acrylic. Proper
drying time between the oil stain and finish coats is essential! The
other cause for blushing is high humidity. Spraying water based
finish in humidities of over 75% may cause blushing because moisture
becomes trapped beneath the finish and cannot evaporate. You can
prevent this condition by increasing air movement in the finishing
area with a fan. All water needs to evaporate is sufficient air
movement. You can also improve drying conditions by increasing the
temperature in the drying area.
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Surface is not leveling out. In
hot temperatures (85F – 100F) the finish may dry too fast. Use
General Finishes Extender to open (increase) the dry time. Finishes
that dry too fast may not completely level out before all the water
evaporates from the finish. Note: High humidity can cause the
finishes to take longer to dry but will not harm the final finish.
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