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Wood finishing
is fun and easy. Don't rush through finishing a piece of
furniture as if it is a race. Imagine how it will look
finished in your home in living color. Set up a good prep
area. Turn on some tunes. Get creative and enjoy the
journey. Make something that will bring beauty to your life,
save you money, and have fun in the process. Take an a little
extra time to get a good result.
If you are an
experienced wood finisher, refer to our retail brochures for
quick and simple finishing instructions. For those of you that
like to know more, we'll take you step-by-step through the wood
finishing process including preparing the wood, selecting the
finish and applying traditional or decorative finishes. Whether
you're planning to finish furniture for your own home, make gift
items, or take up woodworking as a hobby, you'll find wood
finishing to be a rewarding experience. It's a practical skill
that you'll take with you throughout life. Anyone can save money
by finishing their own furniture.
The most
critical part of finishing a piece of furniture happens before
you open a can of stain or paint. A thorough sanding is
often the factor that separates "acceptable" results from
"professional-looking" results.
Tips for kit
(unassembled) furniture: If you are assembling furniture, do so
with an eye to the finished product. Do any major sanding
required to make solid and flush joints and corners. Some find
it easier to sand before the furniture is permanently assembled.
Use caution when sanding individual pieces to avoid rounding
over crisp edges that may form gaps when joined and glued.
Whether the
project is a ready to finish piece of furniture, a freshly
stripped old antique, a kit that needs assembly, now is the time
to make minor repairs and do the finish sanding. Use crack
filler to fill voids, nail holes and other imperfections. Crack
filler should be sanded until it remains only in the void, and
not on the surface of the wood. Excess glue on the surface
of the wood must either be flushed and washed away with
clean water while it is still wet, or allowed to dry and cut
away with a sharp chisel or knife—any remaining spots or
smears must be completely sanded away. Areas contaminated
by glue will not accept stain. |
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We cannot stress enough that you
must have a strong base of proper sanding to achieve the perfect
finish!! See our sanding tutorial below if you want more
details. All surfaces should be clean and free from all dirt and
oils. Prep sanding is done with progressively finer grits. Do
NOT start sanding with very fine sandpaper on unfinished
wood. Prepare the surface by using medium paper first, and then
proceed to finer grades. On most raw woods, start sanding
in the direction of the grain using a #120-150 grit paper before
staining and work up to #220 grit paper.
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On soft
woods such as Pine, Aspen or Alder, sand first with #120 and
finish with #220. On hardwoods such as Oak, Maple, Birch or
Parawood, sand first with #120 and finish no finer than
#180.
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On hard
woods such as maple or birch, start with a #120 grit paper
and finish with a #150 grit paper to keep the grain open and
receptive to stain.
Finish the final sanding
with a finer grit sandpaper such as #220.
Do not over sand or you may seal
the wood so much that it will not take a finish. 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.
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Make fast work of prep
sanding! Shown here is an orbital power sander with dust
bag used to prep the wood surface and buff out between top
coats. Sheryl loves this sander! Just use the correct
grade of sandpaper when buffing out between top coats or milk
paints. We often
prefer to hand sand the final top coats. Do not use an
orbital sander when distress sanding flat painted surfaces for
an antiqued look. The orbital sander will dig in as you apply
pressure to get through the paint, leaving round areas of wear
that will not look natural. Natural distressing runs with the
grain of the wood. This photo shows one coat of topcoat
being buffed out over Lamp Back Paint. |
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A sanded surface is
nothing more than progressively finer and more numerous
scratches. Therefore, skipping a grit leaves deep valleys that
successive grits are hard-pressed to remove.

A general rule for
the use of sandpaper is as follows—the finer the sandpaper used,
the lighter the stain color will be. Conversely, the coarser the
sandpaper used the darker the stain color will be. Remember that
a coarser sanding job will look less refined than the smoother
surface that comes from progressing through increasingly finer
grits of sandpaper. Final sanding will bring the surface to the
desired smoothness. Sanding must be thorough, even and with the
grain of the wood. If these criteria are met, no further sanding
will be necessary. Since there are so many grades of sandpaper
available, some knowledge of what the various designations mean
and a little practice are useful in order to take advantage of
this important tool. This chart is based on our experience and
is intended as a guideline only.
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Description |
Grit # |
0 Grade |
Use |
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Very Fine
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600 |
10/0 |
Polishing
and finishing after staining |
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400 |
0/9 |
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360 |
8/0 |
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320 |
7/0 |
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280 |
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240 |
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Fine
Medium Fine
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6/0 |
Finish sanding before
staining |
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220 |
5/0 |
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180 |
4/0 |
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150 |
3/0 |
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120 |
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Medium |
100 |
2/0 |
Removing rough texture
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70 |
1/0 |
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60 |
1/2 |
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Coarse |
50 |
1 |
Distressing, rounding
and rough areas
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40 |
1 |
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36 |
1.5 |
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Very
Coarse
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30 |
2.5 |
Very rough unfinished
wood
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24 |
3 |
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20 |
3.5 |
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16 |
4 |
The number of
identification or grit number on the back of sandpaper sheets
indicates the smallest opening through which the abrasive
particles will pass. For sandpaper marked 220 the abrasive
particles will pass through a screen with 220 openings per
linear inch.
The designation
‘Open Coat’ indicates a particle distribution to prevent the
paper from clogging. The adhesive used on wet or dry
sandpaper is resistant to water, oils and paint thinner.
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The adhesive
used on standard sandpaper is water sensitive.
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Cabinet
grade sandpaper is backed with heavy paper.
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Finishing
grade is backed with more pliable paper.
The types of
abrasives commonly used for furniture finishing are garnet,
aluminum oxide and silicon carbide. In general, red garnet paper
is used primarily for hand sanding. Grey to white aluminum
oxide is used for either hand or power sanding; black silicon
carbide is the abrasive of choice for very fine sanding in
the woodworking field.
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Material |
First
Sanding |
2nd Sanding |
Final
Sanding |
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Oak |
120 |
150 |
180 |
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Birch |
120 |
150 |
180 |
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Maple |
120 |
120 |
180 |
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Mahogany |
150 |
180 |
220 |
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Walnut |
150 |
180 |
220 |
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Fir |
120 |
150 |
180 |
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Pine |
120 |
150 |
220 |
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Cherry |
120 |
150 |
220 |
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White Ash |
120 |
150 |
180 |
Coarse
sandpapers below 100 grit, are rarely used for fine furniture
finishing. They may, on occasion, be useful for distressing the
surface, rounding harsh corners, or breaking down extremely
rough areas. The grades of sandpaper used most for furniture
finishing fall in the fine and very fine categories—that is from
120 grit through 220 grit; with 320, 400 and 600 grit used for
special purposes. For “hard to stain” woods, finish sanding with
120 grit will usually accommodate the problem. For finish
sanding on most furniture hardwoods (e.g., cherry and mahogany)
use 180 grit or 220 grit. The use of grits up to 600 is
certainly allowed but is not standard practice. Usually you will
have to make a concession either to surface smoothness or to
color acceptance. Factory sanded furniture still requires finish
sanding. Do the initial sanding with medium fine paper and
finish with one or more of the finer grades. Be sure you sand
the whole surface with the same grit paper. Do not miss a spot.
If you do, the stain will be darker on the rougher areas. |
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Do NOT use
steel wool when preparing wood for waterbase finish, as steel
particles may cause rust spots. |
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Sanding Blocks also
make quick work. In this photo, Chris is sanding between coats
of milk paint using a fine grit rectangular foam sanding
block. Great for corners and small places. |
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Color is determined by
four factors:
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1. The color
of the stain. |
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2. The nature
of the wood species and how porous it is. Different
species of wood absorb stain
differently. Test the color on a hidden section of the
wood you are using. |
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3. How long
the stain is left on. |
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4. The extent
of wiping when removing excess stain. |
You can mix
General Finishes stains together to create custom wood tones or
colors.
Be sure to mix enough to complete the entire
project. |
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Other preparation |
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Remove dust with
an air hose, damp cloth or “oil free” tack cloths. Do not use
tack cloths which contain linseed oil when using water
based finishes. Oil free tack clothes are available from your
local unfinished furniture or woodworkers store. |
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Optional
pre-wetting of the wood. On certain
woods such as oak and ash, pre-wet the wood with a damp cloth to
raise the grain before final sanding. Allow the dampened wood to
dry 30 minutes before the final sanding. This will provide a
smoother final finish. |
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Stir the
content= of the can every time you open it! And we mean
stir.
Whether you are using oil base
or water base products, wood stains and milk paints contain
colored pigments and dyes that settle to the bottom of the can
and must be thoroughly mixed before application. It may take
several minutes to thoroughly mix the content= of the can
so that the color remains consistent as the content= are used
up. |
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The open time with waterbase
products is shorter than oil, so stain one surface at a
time. Don’t be stingy when applying water base products. Load up
the foam brush or handi-painter with product and apply
LIBERALLY, keeping the surface you are working on wet with
product until you are ready to wipe that section off. As
you stain each area, remove excess stain by wiping with a cloth.
It is important to wipe off the stain thoroughly and
consistently (in the direction of the grain) to get an evenly
stained surface. A second coat, applied after the first one is
dry, will give you a darker and deeper color.
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Look for ways to
disassemble the furniture to make staining easier. Just by
removing a few screws you can remove the back of a piece of
furniture. |
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Custom mix
colors!!! Don't let a color chart slow you down. Our water
based products; Country Colors, Milk Paints, Wood Stains and
Topcoats can be inter-mixed to create custom colors. Let your
creative side come out and play! The
interior color shown here and in the photo above is a blend of
Red Pepper, Yellow Sienna, mixed right in the can until we got
the color we wanted for the inside of the Rooster. |
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Before starting
almost any wood finishing project, have these items on hand. Get
enough gloves, sanding blocks, brushes, etc. Just like golf
balls are in golf, supplies are the cheapest part of the game. |
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Quality paper
towels or lint-free absorbent wiping cloths. |
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Use gloves, even with waterbase
products. Get several pairs if you are planning to layer colors
on your project. Applicators will rinse free very well, but the
dyes and pigments in waterbase products can stain your hands. |
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Many
finisher prefer the snug fit of the latex-free gloves from your
local pharmacy. Any glove will work. Here is a tip: when
cleaning up your work area after using WATERBASE products,
just grab all the wet application cloths in your gloved hand and
peel the glove off your hand over the cloths for quick disposal.
Never do this when using oil based products. All oil based
application materials must be carefully disposed of in
accordance with the standards of your local fire department. |
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Aluminum foil
and paper plates. Paper plates covered in aluminum foil provide
the perfect container for application. Throw away the foil and
reuse the plates. Remember, oil based products are combustible.
Dispose of them in accordance with the standards of your local
fire department. |
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Prepare raw wood
surfaces using fine grit sandpaper such as #180-#220. Use #320
for sanding in between coats. 3M sanding pads can also be used
between coats. |
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Choose your favorite
application tools. You can apply any stain with an old rag or
bristle brush, but we recommend the following. |
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Use foam brushes
for small surfaces and corners. Flimsy foam brushes fall apart
in minutes - a good foam brush can be used several times. Buy
enough quantity to make life easy on yourself. We usually have
several either in use, rinsed or drying. They can be stored
after drying and reused several times.
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Small old bristle brush for dragging
excess stain or paint out of corners. |
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We love using
Handi Painter paint pads for large surface areas. They
make it easy to apply a lot of product to a section FAST, and
are good for oil base or waterbase applications. We cut
ours in half to make two applicators. Note that when Handi
Painter Pads are new, or cut in half, they shed. Be SURE to
brush or rinse off any fuzz before using. The loose fibers will
show up in the finish! If you are using waterbase products,
they can be washed and reused many times. |
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Don’t work like a dog
sanding anymore. Use soft back sanding sponges! They fit on
standard palm sanders, are very flexible, easy to clean (rinse
with water), and last a LONG time. They work great for buffing
between coats of finish and are available in 4 different grades
– fine enough to rub out finishes! Our favorite for final
finishing is the SUPERFINE grade. |
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Use
Blue Scotch 3M Painters masking tape to section off your
project. Great for two tone finishes or for creating specialty
looks such as this checker board pattern. |
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Clean up materials:
paper towels, cotton swabs, mineral spirits and sealed metal
containers, such as empty paint cans (for cleaning brushes, and,
with the addition of water, for disposing of rags and waste
soaked with oil finishes). |
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Old clothes are recommended. They
are usually expendable, lint-free and make great Halloween
costumes. |
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Cover the floor
with drop clothes, news paper or plastic sheets. Make sure you
cover the floor area around your project enough to easily walk
around it. Be mindful of the bottom of your shoes - don't walk
through drips and then track onto finished flooring. If your
project is small enough, put it on
a dolly with wheels to easily access all sides. The dolly shown
here was purchased at Home Depot, and is useful for many other
things around the house. |
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When staining
door and drawer knobs, punch the knobs into the bottom of a
cardboard box for easy finish application. Simply cut slots in
the cardboard, and slide the screws (with the knobs attached)
into the slots to make them free standing. |
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Use old boxes for
drying racks for small pieces such as drawer fronts.
Recycling bins work well too. |