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Craftsman Frame
Pegged half-lap joints are the cabinetmaker's way to build a beautiful frame.
Picture frames are pretty easy to make, except when it comes to putting the
pieces together. Getting four mitered corners perfectly cut and glued can
drive you batty! This frame uses a simpler approach-the half-lap, a
traditional furniture maker's joint. It's very easy to make on the tablesaw and
resembles a much more complicated mortise-and-tenon joint.
If you've never made a picture frame or lap joint before, this is a great
project to start with. And it's easy to make a whole bunch of these frames at
the same time. We'll show you an optional goof-proof sled that helps make
cutting dozens of joints simple, safe and accurate.
Our frame is teak, a wood whose rich golden color beautifully complements most
photos or artwork. Using quartersawn white oak would also look striking. This is a
traditional Arts and Crafts-style frame, and quartered oak was the preferred wood
of that era. If you've got some 8/4 (2-in.) wood, you can make top-grade
quartersawn pieces for this frame by ripping the board at an angle (see "Make
Your Own Quartersawn Lumber," page 5).
We've sized the frame to fit precut matte and glass available at many craft stores,
so you don't have to cut your own. The matte is 11 x 14 in. and fits an 8 x 10-in.
photo.
You'll need a stacking dado set for your tablesaw to make the lap joints. (A
wobble-type dado set won't work because it doesn't cut a flat bottom.) You'll also need a rabbeting bit for your router table (Photo
8, page 3). We recommend using a brad-point drill bit for the pegs that go into the frame's corners (see Sources, page 4). This bit
makes a cleaner entry hole than a standard twist bit.
The uprights, or stiles ( A, Fig. A ), of this frame are 5/8 in. thick. The cross pieces, or rails ( B ), are 3/4 in. thick. If you don't have a
planer to thin down pieces to 5/8 in., that's not a problem. The pieces are so narrow that you can make them the right thickness on
your tablesaw. Just stand some 3/4-in. pieces on edge and rip them to 5/8 in.
Begin by cutting the stiles and rails to final width and length (see Cutting List ). At the same time, make two extra stiles and two
extra rails from an inexpensive wood to use as test pieces when you cut the joints.
PHOTO 1:
Build a sled to cut the half-lap joints ( Fig. B ). You could simply use a fence
on your miter gauge, but this sled is more accurate, is safer and always
delivers consistent results. Install a 3/4-in. dado set in your saw and raise
the blade 1/8 in. above the sled. Cut a slot through the sled's base and
you're ready to go.
PHOTO 2:
Cut a rabbet on one end of each of your spare stiles ( Fig. C ). Your goal is
to remove exactly half the thickness. Clamp the stop block so the length of
the rabbet matches the width of a rail. Two passes are necessary to cut the
full rabbet.
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PHOTO 3:
Test the fit until the two test pieces are flush. The back of the frame will
then be perfectly flat, which is important for accurately cutting the rabbet
that holds the matte and glass. If the pieces aren't flush, adjust the height
of the blade and try again. It's better to start with the blade too low rather
than too high, because you can recut the same pieces. When you're
satisfied, make these cuts on the ends of all the real stiles.
PHOTO 4:
Cut the first half of the dadoes in all the rails with the blade at the same
height as in Photo 2. The full dado requires two overlapping cuts. You'll
clamp the stop block in a different position for each cut. For the first cut,
mark the dado on a test rail. Line up the outside mark with the right-hand
cut in the sled.
PHOTO 5:
Cut the second half of the dado only in
a test piece. Move the stop block so
the inside dado mark lines up with the
left-hand cut in the sled.
PHOTO 6:
Test fit one corner. Your goal is to
have the two pieces slip by each other
to make a tight fit without requiring
any force. If the joint is too tight, move
the stop block and recut the test piece.
If the joint is too loose, make the dado
narrower by adding a piece or two of
tape to the stop block's end. Try the
new setting out on the second test
piece. When you're satisfied with the
fit, continue cutting the actual rails.
Sand all the pieces to 150 grit. Slightly
round all the edges with sandpaper.
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PHOTO 7:
Glue the frame together. You don't need much glue or clamping
pressure. Spring clamps work fine, so you don't have to worry about
marring freshly sanded surfaces. Remove any squeezed-out glue with
a sharp stick before the glue hardens. Wipe off the stick's glue on a
damp rag as you go.
PHOTO 8:
Rout a rabbet all the way around the
frame's back ( Figure D ). Use a
rabbeting bit with a ball-bearing pilot.
The pilot rides on the inside of the
frame to control the depth of cut. Make
this cut in two passes. Raise the router
bit so the first cut is 1/4 in. high; then
raise the bit so the second cut is 3/8
in. high.
Caution: Hold the frame down with
push pads to keep your hands out of
harm's way.
PHOTO 9:
Square the rabbet's corners using a
wide chisel. Cut across the grain first,
then with the grain, then across again,
and so on, taking small cuts to avoid
splintering the wood. When the rabbet
is complete, order the glass. It should
be 1/16 in. smaller than the opening.
To be on the safe side, your best bet is
to give the frame to the glass cutter.
(Precut 11 x 14-in. glass to fit the
frame is also widely available.)
PHOTO 10:
Drill a hole all the way through each
corner of the frame using a brad-point
bit. Glue 1/4-in. dowels into each hole.
Use a contrasting wood to emphasize
this accent (see Sources, below).
Small dowels vary in diameter, so it's a
good idea to drill a test hole first. You
may need to switch to a slightly
undersize bit to get a good fit. The
brad point bit I used comes in 1/64-in.
sizes (see Sources).
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