The "six pane"
in
six pane oak hutch refers to the
number of glass pieces in each door. The
glass pieces are sometimes referred to as lights because
they let outside light in to display the contents. Hutch
is the name most used in contemporary times when
referring to this type of furniture. But historically
this would be called a hutch cupboard, cupboards being
any piece of furniture used to store things. A hutch is
a cupboard with drawers and shelves. The shelves could
be open as in "open hutch" or enclosed with doors as
this one is.
This hutch is
constructed from quartersawn white oak which has a more
attractive figure than red oak due to its larger rays.
These rays are enhanced by the quartersawn material.
Overall dimensions are 52"W x 88"T x
18 1/2"D. The front view is nearly a perfect golden
rectangle, an aspect ration most pleasing to the eye.
The hutch is built in two pieces to make moving it
easier. There are three shelves in the enclosed top case
(two fixed shelves plus the bottom) that are grooved
to support plates that stand against the back.
The
opening between the upper case and the lower cases top
(called a pie shelf) was traditionally 4" to allow for
pies to be placed there. More contemporary designs
increased this dimension to 8", but in this design it
has been increased to 12". This
will allow for a groove in the top to also support
vertical plate displays of plates as large as 12".
The panes in the upper doors are
traditional divided lights, six individual panes in each
door, not a single pane of glass
with imitation divides. The three horizontal
drawers are constructed using hand dovetail joints
with solid beveled bottoms. The lower doors are
constructed using mortise and tenon frame and panel
construction, with beveled panels.
The crown molding is made up of
traditional cove molding sandwiched between a
quarter-round on top and a delicate bead on bottom. The
feet are custom ogee.
Note:
The pictures you see above are not photographs but
rather 3D rendered drawings. I design all my furniture
using TurboCADTM
Professional, a 3D design and drafting tool. This
enables me to see how the final milled parts will go
together without actually building a prototype. In
addition to saving time and material it provides me
detailed drawings and renderings which aids in making
design trade-offs. Changes during this stage are also easy
and inexpensive.
The first four steps in any project are: 1) make the
plans, 2) acquire the rough lumber, 3) plane & square to
rough dimension (called rough to ready) and 4) join,
glue-up and flatten panels. These four steps entail a
lot of work and require good woodworking technique.
However they don't begin to show the shape of the piece
nor highlight the joinery. So I have skipped these steps
in this discussion and instead have
started with dovetailing of the carcass panels.
Normally
when I cut dovetail tails I place the work in a bench
vice. I can adjust the height for a comfortable working
position and secure it so that there is no chatter when
I cut. However, this piece is 18 1/2"W x 49"T and the
tails have to be cut on the 49" end. My bench is 34"T
leaving 15" of material which will allow chatter when
cutting. In addition 49" is a rather tall piece to cut
while standing on the floor. Luckily I have a bench that
can be raised to 44 1/2" and with the help of some
clamps the work can be
secured to the bench
at a height where I can cut chatter free.
See photo at left.
After
securing the work I
mark the tails
making sure to also mark the waste area with an X. When
cutting a long row of tails it is very easy to get
disoriented and cut away the wrong material. This step
of marking the waste pays dividends even for seasoned
woodworkers.
As
previously mentioned, cutting the tails at a height of
49" while
standing
on the floor is almost impossible. It's at times like
this that a
step ladder
comes in handy. Standing on the first rung I can cut the
tails quite comfortably. However, I have to reposition
the ladder every couple of cuts so that I can maintain a
proper stance and arm motion.
There are two features of the
tail cut (when cutting them before pins) that are critical. First, the cut
must be
precisely perpendicular to the
face of the work.
Failing to do so will leave unsightly gaps, poor glue
joints and weak mechanical joints.
Second, you must stop the cut on the scored line marking
the cut depth, and this must be true of both faces. The
angle of the cut is nominally 8 degrees from vertical,
but this is not critical. Neither is the width of the
gap (pin width). Machine cut dovetails would all be
perfectly angled and spaced, but then they would look
machine cut. The human is not a machine. Hand cut
dovetails are beautiful precisely because they don't
look machine cut, they are all slightly different,
adding to the beauty of the piece.
After
cutting the near vertical cuts with the dovetail saw a
fret saw is used to
remove the waste.
The goal is to cut as close as comfortable to, and
parallel to, the scored line marking the waste depth.
Leave just enough material such that the score line
remains un-bruised. In order to make this cut the blade has to be "twisted" in the saw so that
when the blade is cutting parallel to the score line the
saw is angled up enough to clear the tails. This is
easily done with the help of a pliers.
A side
note. There are two stars of the hand cut dovetail show
- the dovetail saw and the chisel.
The dovetail saw must have a thin kerf to make precise
cuts, a rigid back to keep the blade straight and fine
enough teeth to leave a clean cut. The chisel must have
a finely honed micro (or secondary) bevel to give it the
sharpness required to cleanly cut hard wood. It should
also be made of good steel appropriately hardened and it
must comfortably fit in your hands. I use a western
style
Lie-Nielsen
dovetail saw. I have both Lie-Nielsen and Marples (now
called Irwin) chisels and use them interchangeably.
The
score line is scored at a depth equal to the thickness
of the mating pin board. A dovetail chisel is used to
clean out the waste. The chisel is placed in the score
line and
struck with a mallet
to make a perfectly straight and vertical cut. This cut
is made half way down on all waste areas. Then the board
is flipped and the waste cuts finished from the other
side.
The
finished tails
look like the photo at above left. Note a few things.
Most important the walls of the tail are perpendicular
to the faces and the cuts stop at the score line. Note
also that I cut a little off line in a couple of place.
That is not a problem because the mating pins will be
marked using their mating tail and all will be happy.
Compare hand cut dovetails with machine cut and see
which you like esthetically. Hand cut wins - hands down
- every time.
The
tails are used as a mask to mark the pins. The pins are
then cut with the dovetail saw and the majority of the
waste is removed with the fret saw, just like the tails.
The
rough cut pins,
shown left, are then ready for
cleanup
using a sharp chisel and mallet shown right. When
cutting the pins it is important to leave the pencil
marks while cutting on the waste side of the line as
shown in the
up close picture
below left. This is because the tails were used as
masks, therefore everything under the tails must be
removed. However the pencil mark is just outside the
mask and is actually part of the pin. The
completed pins
are shown at right below with mating tails. You will
have to wait until I glue up the entire carcass to see
how well the pins and tails fit together.
Hand
cut dovetails are time consuming. On a project such as
this there are over a hundred dovetails (a dovetail is a
pin and tail combination). Each dovetail takes six cuts
and two chisel cleanups plus measuring and marking.
That's in excess of 800 manual operations for dovetails
alone. So why cut them by hand instead of by machine and
jigs? Because they are beautiful when completed.
The woodworker has much
more control over the size of the pins and can vary them
at will. And I believe hand cut half-blind dovetails are
actually stronger than their machine and jig
counterparts, though that will take a project in itself
to demonstrate. In addition, as a woodworker, it is a
connection with the craftsmen of the past that tugs at
you, it's working in a dust free shop void of power tool
noises and it's the closeness to the wood that you feel
as you shape it with your hands. While I wouldn't
exchange all my power tools for hand saws, I do take
every practical
opportunity to use hand tools to shape and join wood.
The
drawer framework,
shown in picture at left,
consists of drawer supports (horizontal rails dovetailed
into the sides), sliders (running front to back in the
same plane as the supports) and dividers (sitting on the
sliders to guide the drawer). Note that there are three
drawers, each drawer divided from the other at both top
and bottom. The dividers will guide the drawer to keep
it from jamming when opened or closed.
There is
a problem associated with this style of case
construction.
The
wood grain of the carcass runs vertically on the sides
and horizontally along the top, in both cases parallel
to the front and back surfaces. This means the carcass
will expand and contract in depth with changes in
seasonal humidity. If the drawer framework were one
structure glued to the sides of the carcass, either the
framework could be pulled apart with this movement, or
the sides could be split. Since we want this piece to
last for generations we have to find a solution to this
problem.
To deal
with it we must first know the extent of the problem, or
in this case the extent of the expansion/contraction of
the sides and top. I use a CAD tool called Wood Movement
Master by Kite Hill Software to help with this. If you
click on the
picture at right
you will see calculations for white oak panels used in
this application. The user enters the moisture meter
he/she is using (in my case a Delmhorst 2000), type of
wood, area of the country, the moisture content reading
(8% in this case), type of calculation desired
(Board-centric meaning board expansion/contraction), how
the wood was sawn (quarter sawn in this case), number of
boards in the glued up panel and the width of each
board. Then press calculate and presto! The results tell
me that each 5.5" board will move a total of 0.06"
throughout the year, varying between 5.48" at its
narrowest and 5.53" at its widest. Since there are three
boards there is a total movement of 0.18" or about
3/16". If I had used flatsawn white oak the movement
would have been twice that, or about 3/8".
To
allow for this movement without breaking joints or
splitting sides over time, I made the drawer slides
"float". In the
picture at left
you can see that the framework is constructed with
mortise and tenon joints. The front tenons are glued
into their mortises and the dividers are glued to the
front support and the sliders. The dividers and rear
tenons are not
glued to the rear support leaving them to float while
riding in their mortises. In addition you will notice a
gap between the rear support and the sliders (top right
corner of picture) which allows for shrinkage and
expansion based on the Wood Movement Master
calculations. Now I can rest assured this piece will last
for many generations and remain as strong as the day I
constructed it.
 The
base face frame dresses up the front of the base and
provides framing for the drawers and doors. If I were
building kitchen cabinets I would use either pocket
screw or biscuit construction. With pocket screws a butt
joint is secured with screws that are "toe nailed" into
the joint through a pocket to allow the screw to hide
below the surface of the wood. These screws and pockets
are applied from the backside so they are not visible.
With biscuits a butt joint is secured by first machining
a semicircular mortise into each piece and then using a
biscuit shaped tenon to join the pieces. Neither method
provides as much glue surface area as the mortise and
tenon joints I used in this assembly, shown in an
exploded view left,
and an
assembled
view right. In
addition, pocket screw methodology relies largely on the
screws for strength, since the butt joint is end grain
to edge grain, which is a notoriously weak glue joint.
The biscuit is somewhat better in that the biscuit
provides a face grain to face grain glue joint, however
the glue area is still rather small. In my opinion
biscuit and pocket screw joinery are compromises that
should only be used in fine furniture when mortise and
tenon joinery is not an option.
Above you
can see the
glue-up of the face frame
to the base, proving once again the old adage "you can
never have enough clamps".
To
this point every part of this piece has been milled and
shaped with straight, eight degree (dovetails) or ninety
degree cuts. Its ogee feet are quite different. Ogee
feet are smooth continuous curves on both the front and
side. This piece requires six ogee feet. Two sets of two
are required to form the front wrap-around feet plus two
back feet. Shaping them from stock milled to overall
dimensions is a
five step process.
The feet measure 6 1/8" tall, 1 3/4" thick and 7 1/2"
long. I plan for six plus one spare to recover from a
fatal mistake should I make one (and I actually did on
this project). I start with stock milled to the finished
height and thickness and 58" long which includes
allowances for chop saw kerfs and other margin to be
explained later. My goal is to produce the
six ogee feet
shown left below.
 Step
1 is to shape the major concave curve. This is achieved
by passing the stock over a table saw blade at an angle
as
shown right.
The angle can be calculated, but it is easier to draw
the desired shape on the end of the stock, start with a
shallow cut and adjust as necessary. The subsequent cuts
must be small and the feed rate slow since this is not a
cut the table saw is designed to make. But careful
attention to safety and patience will produce the
desired shape. A slow feed rate also produces a smoother
cut. This is important because the shaping of this cut
is completed by hand sanding, which can be long and
tedious if you feed the stock too quickly. It further
helps to use a blade with a flat top grind since it also
enhances the cut's smoothness. Safety consciousness is
crucial here because the blade is exposed. After
completing the table saw shaping the surface is hand
sanded starting with 120 grit and proceeding through 180
grit.
Step 2 is
to cut the half-round on the front along the length of
the stock. I used a table mounted router with a
half-round bit. It is important to make this cut such
that the thickness of the stock remains 1 3/4" when it
is completed (see
drawing above). This is
critical because later the stock is placed shaped face
down on the band saw to create the side curves.
Step
3 is to shape the convex portion of the profile. I start
by cutting the stock along its length at an angle
tangent to the right or outside half of the curve (see
drawing above). Adjust
the table saw blade angle to provide the maximum benefit
to the final shaping. Next I secure the stock on the
bench with clamps and shape the curve using a
small block plane.
My favorite plane for this task is the
Lie-Nielsen 102 Low Angle Block
Plane. If the stock is
highly figured a higher angle block plane may be
required to avoid chip out.
I finish with hand sanding proceeding
from 120 grit to 180 grit. I now have a 58" long ogee
shaped stock that I cut into 8" length pieces. Remember
that the final foot length needs to be 7 1/2", but four
of the finished feet need a forty-five degree cut to
wrap-around the front corners. I like to approach this
cut slowly in several incremental cuts. So I leave
myself 1/2" for this purpose (this forty-five degree cut
is NOT made at this time).
Step
4 begins by tracing the shape of the side profiles on
the back (flat) side of each foot. I am careful to
account for mirror images of the back feet and the two
front corner wrap-around feet assemblies. I number the
pieces to get maximum grain matching when the two sets
of wrap-around feet are assembled (see the
black cherry feet
I crafted for a secretary desk and note the grain
matching). When I place the stencil on the flat side I
position it so that the narrow end of the stencil is up
against an end of the stock. The other end is where the
forty-five degree cut is made and I want the 1/2" margin
on that end. Next I
rough cut the profile on the band
saw, including the
half-round profile (the router can't be used for this or
it will produce serious chip out). This cut should
leave the pencil marks
to provide guides for sanding.
Next
the profile is sanded with an
oscillating sander
using 120 grit paper and then hand sand progressing to
180 grit. Note there are parts of the profile that can
not be sanded with the oscillating sander. A file,
chisel and sandpaper are used to complete those with the
exception of the half-round which I leave for later.
Step 5 is
to finish the shaping of the half-round. This needs to
match the front half-round profile, which was shaped
with a router in Step 2, very closely. Failing to shape
this correctly will be highly noticeable in the final
piece. I use the small block plane to eliminate most of
the
blade marks and for those blade marks close to the flat
I use a rabbet block plane or small shoulder plane
because the blade on these planes extend to the edge. A
sharp chisel can pare the flat areas smooth. Finally I
hand sand to 180 grit. Now I cut the forty-five degree
cuts needed to join the front pair of wrap-around feet.
I do this on the table saw creeping up to the final cut
which will leave the foot 7 1/2" long at its longest
point. The feet are now
ready for glue up.
The
ogee feet are attached to the carcass and then trim is
applied. The shaped feet are not wrapped around
the back. However, a rectangular piece of stock is
dovetailed into each ogee foot to absorb side loads when
the piece is slid along the floor. The pocket screws are
used in lieu of clamps to hold things in place while the
glue dries. They add little structural strength.
Trim
runs across the grain over an 18" distance. Simply
gluing it in place would eventually result in a weak
joint as the sides expand and shrink with seasonal
temperature and humidity changes. It may take a number
of years but the end result would surely be a broken
joint or split wood. Nailing the trim would solve most
of the problem but they too eventually fail. A better
solution is shown at right.
Here
tails are screwed to the top in short sections that are
spaced several inches apart. The trim is milled with
what might be called two half pins which in turn creates
a wedged grove allowing the trim to slide into place.
Glue is applied to only the front few inches holding the
side trim to the front trim. As the top expands/shrinks
it is free to move sliding along the dovetails.
The hutch bottom carcass now looks like the picture
at left. Things are shaping up.
At left
is a completed drawer. The front is
white oak and the remainder of the drawer is yellow
birch. Birch is less expensive than white oak, but dense
and hard. It finishes well and runs in color from pale
brown to dark reddish-brown.
At right is a bottom view of the drawer. Note the
hand cut dovetails. In the front are half-blind dovetails, meaning they only show on the side
because of the lipped front. In the back are through
dovetails, meaning they can be seen from the side and
back. Notice also the tapered bottom. This allows the
bottom to more easily expand/shrink with seasonal
temperature and humidity changes. The drawer front is
7/8" thick and the rest of the drawer is 1/2" thick (no
eighth or quarter inch plywood here). It will take a lot
of beating and still last for centuries. This drawer
design is ages old and difficult to improve upon.
The
cupboard carcass is now glued up, shown here on its
maiden voyage on the base. You can see the pins at the
ends of the sides, which will receive the tails of the
top, and then the remainder of the face frame will be
added.
White oak is a dense hardwood. This piece is getting
very heavy. I am glad the decision was made to make it
in two pieces. Moving it around the shop now requires
help from a friend.
Not visible in the picture, but each shelf and base
top have a grove routed in them 2" from the back, so
that plates and serving trays can be displayed upright.
 The ship-lapped back
for the base was milled from plain sawn red oak stock, which is
much cheaper than quartersawn white oak. After applying
the lapped back, constructing the doors and shelf, the
base was sanded and finished using Waterlox Tung Oil and
MinWax Wipe-On-Poly. Because these finishes build slow
and thin, and oak soaks them up, I had to apply up to 10
coats. The front view is shown at left. Note the bluish
reflections caused by incandescent light bouncing off
white walls. The thickness of the finish causes the
bluish spectrum to be visible. The grain in the doors
are really visible in this view. In the side view at
right the reflections are dramatically reduced and
the grain in the drawers is much more visible.
At
left is the base top showing the hand cut dovetails.
Look closely (double-click picture for a larger view)
and you will see that each dovetail is slightly
different size and taper. This actually adds character
to the piece. Machined dovetails, with their
every-dovetail-is-exactly-the-same look, looks sterile
and bland. Also note the scribe line used by the
cabinetmaker to know how deep to make the cut. This is
intentionally left as another "tool mark" that is a
hand-made
tell-tale
sign. If you look at antiques with exposed dovetails you
will likely see this scribe line.
Front side drawer dovetails are almost always
half-blind meaning they can only be seen from the
side and not the front. They are more difficult to
make because they require pin sockets (see
pin sockets used in the hood of a Shaker Tall Clock).
Again the scribe line is visible. The pins and tails
are highlighted by the contrast of the white oak and
red birch, the latter used for the drawer box. Each
drawer is branded using a branding iron with my
name. I am hoping that one day 200 years down the
road a descendant will wonder about the craftsman
who made this piece, and want to know how he is
related.
The
cupboard has progressed since we last showed it. The
top is dovetailed in place, the v-grove ship-lapped
back is on and one coat of finish applied to it, a
back bottom rail has been added to receive the
ship-lapped back via a tongue and grove and the trim
is applied.
If you look closely you will see that the v-grove
ship-lapped boards are of random width, and though
not visible they are also half inch thick. This is
traditional for two very practical reasons. First,
half inch is strong enough for the back and it saves
the additional weight of three quarter inch stock.
And second, the backs were usually made from scraps
left over that either had too much twist or warp to
mill three quarter inch stock but would mill to half
inch, and this scrap usually came in random widths.
Practicality aside, I think the random widths adds
to the character of the piece.
Notice how the oak darkens with the application of a
clear tung oil finish, even with one coat. White oak
looks rather pinkish prior to any finish but darkens
nicely when applied, and the figure pops out,
especially the rays, which show up only in
quartersawn oak.
The
doors on this project are true divided light doors.
Each light is a single pane of glass and the stiles,
rails, mullions and muntins are joined with cope and
stick joinery. This is not a task for the feint of
heart, either mentally or physically. The number of
joints in a single door can seem overwhelming, and
milling all parts to the exact dimensions is
crucial. Any differences in mullion or muntin length
can produce a door that will not go together or one
that is not square. In addition there are three
tenon lengths to cope with (No pun intended, but it
works!). It is very important to have a repeatable
procedure for milling these parts. Lastly, these
parts are very small and there is ample opportunity
for a serious accident, which I want to avoid at all
costs. To that end I use a setup shown at
right.
You
might ask why I use a shaper to drive a router bit.
The answer is that I am using Lonnie Bird's Divided
Light Door Set (model number 800.525.11) which is a
three bit set. This set has an advantage over single
bit sets in that it allows for tenons of any length.
The set comes with one bit for cope cuts and another
for the stick cut. I don't use the third rabbeting
bit because I feel it is too dangerous with pieces
this small. I set up the router table for the stick
cut, the shaper for the cope cut and the table saw
for the rabbet cut. I also set up my dedicated
mortiser at this time because it will be used for
milling mortises in muntins. Once each machine is
meticulously adjusted to give matching joints I
leave them undisturbed throughout the process.
The
trick with this divided light set is to get the
tenon length correct and to get the tenon correctly
registered with the cope profile. I use a sled whose
edge rides along the bit's bearing (see picture at
right). But to get the correct tenon length the
stock needs to hang over the edge of the sled. For
this registration I use two blocks of the
appropriate thickness sticky taped to my shaper
fence. Then I place the edge of the sled against the
blocks, push the stock up against the fence and
secure it in place (shown above at left). I notch
the stock to assist the cope bit from having to
remove all the material - it only removes that which
defines the cope shape.
The
stock is 7/8" square, fairly typical for this
application. But one problem is that the bearing is
too far down from the stock to ride on the sled edge
without the use of a spacer, which I attach with
sticky tape. I also sticky tape sandpaper to the
holding block to prevent the cope bit from pulling
the stock into itself and destroying the squareness
of the cut.
One critical check is to be absolutely certain that
the sled's fence is perpendicular to the sleds edge.
If not, again the cope cut will not be square.
Note that I use a sacrificial block to reduce tear
out. Tear out in this instance isn't generally a
problem because the subsequent stick cut will likely
remove any damaged material. But I find this to be
good practice anytime there is the potential for
tear out. Now I can make a safe and clean cope cut
with both hands on the grips and away from the bit
(above left).
Safety
is always a consideration in the shop, hence I
perform the rabbet cuts on the table saw. I find
this much safer than a router cut with such small
pieces. The blade is only 5/16" high. I use a
feather board and push stick to stay clear of the
blade. The short mullions are a little more
dangerous than the longer muntins, but all-in-all
the rabbet cuts are relatively easy compared to the
sticking cut which comes next.
The
stick cuts for the mullions and muntins are
potentially dangerous because the stock is narrow
and unstable, especially on the second cut. I use a
feather board to hold the stock against the fence as
it passes the router bit. This way I can remove my
hand from the infeed side and place it on the
outfeed side after it has passed the feather board,
bypassing the bit altogether (below left).
Muntins
require a mortise in the middle to allow for mullion
tenons to enter from each side. This cut is
performed on the dedicated mortiser prior to any of
the cope, stick or rabbet cuts. It is critical that
this mortise be correct or the cope and stick joints
will not seat properly. In addition, they must fit
snug along the sides or you risk unsightly gaps that
will need to be filled, but still they almost always
show upon critical inspection. The mortiser is set
up and meticulously adjusted with the other
equipment before any work is done on the final
material. Like the other three pieces of machinery
it is left undisturbed throughout the process.
Finished muntins are shown below right. Notice the
through mortises in the middle.
The final door will be a clean
seamless matrix of cope and stick joints, the doors
will register themselves square, and it will be
exceptionally strong thanks to all the mortise and
tenon joints involved.
The
picture at left shows the finished cupboard sitting
on its base top. Notice that the door has been designed
such that the muntins hide the fixed shelves
behind them. The plate is sitting in a grove and
leans against the back. All four surfaces (base top,
cupboard bottom and two fixed shelves) have this
plate groove.
The v-grooved ship-lapped back shows nicely through
the divided lights. The spaces separating each board
will provide for expansion/contraction that
accompanies seasonal temperature and humidity
variations. But just as important, the vertical lines
add to the overall elegance of the piece. You can
visit the
Gallery page to see more pictures of the
finished piece.
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