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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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