cutting diagram 3-ft bookcase

ROOF ASSEMBLY
R(NF BOAR DETAIUi
Drill pilot holes
lor #8x11/q"
Fh screws
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OVER
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Fh woodscrew
ON TO T}IE Rfi)F
The first step in building the roof is
selecting your stock. You should
choose the flattest, straightestgrained
boards you can find.
Before cutting, make sure the
lurnber is good and dry. If it w.ls
stored indoors at the lumberYard,
give the boards about a week to
stabilize in your shop. If the lumber
was stored outdoors, drying maY
take several weeks.
Once the lumber dries, cut five
2'/2"-wide x 36"-long blanks from a
2x4. That's enough stock to make
four each of the lower (J), middle
(K), and upper (L) roof boards, as
shown in the drawings above.
The first cut to make on all the
blanks is an angled cut (see Fr3. 4
below). How you set up the saw for
this depends on which
way the
blade on your saw tilts. If it tilts
toward the right, move the rip fence
to the left side. On left-tilt saws, the
fence should be positioned on the
right side of the blade.
Now tilt the blade to 23o and
raise it to make a 2"-deeP cut, as
shown in the detail tn Figure 4.Lock
down the fence %" from the base of
the blade.
With all the blanks kerfed, reset
the blade to 0o and lower it as
shown in Figure S.Adjust the fence,
then rip into each blank. This cuts
away the waste leaving a long,
tapered blank. Be sure to use a push
block and hold the workpiece down
and against the fence as you cut.
The next step is to add the decorative
bevel to the thin edge of
each blank. This is shown below in
Figurc 6.Trlt the blade to 23" again
and readjust the fence. Then back
bevel a thin edge on each piece.
As can be seen in the Roof Boatd
Details on the next Page, the lower
(J) and middle (K) roof boards staY
the same width. The uPPer boards
(L), however, are narrower. So on
one blank, rip away most of the
flat section, leaving these boards
17l."-wide.
Once the blanks are to final
width, they can be cut to rough
length. Start with the wide blanks
and use them to cut four lower
boards (f to about 16"-long, and
four middle boards (K) about 13"-
long. Then crosscut the narrow
blank into four pieces about 9"-long
for the upper roofboards (L).
Keep
hands
away
from
Set blade .
heighto cut
through
angled kerf.
;h-;b
leaving plece
68
WORKBENCH tr NOVEMBER I DECEMBER 2OOO