–8–
CONTINUED - WOODWORKS: ADVANCED PROJECT 2009-2010 PATIO TABLE
FiG 2.
Outer Ring Sled
Slat Taper Sled
Stop Block
Stop Block
75°
82
1
/2°
75°
82
1
/2°
FiG 3.
A
B
5
7
/
8
"
12
11
/
16
"
4
1
/
8
"
Rad.
3
1
/
2
"
Rad.
15°
22" Rad.
23" Rad.
19" Rad.
When making this pattern board, use the trammel (see Fig. 7)
to draw circles with the following radii: 3-1/2", 4-1/8". This
marks the radius of the hub and the depth of the rabbet on the
underside. Next draw arcs at 19" and 22" to mark the outer ring.
Draw one more mark at 23" to establish the long points for your
mitered outer ring sections. Next, section the whole circle into
four equal quadrants using a straight edge and a square. Use the
square to make a mark 12-11/16" up from the 9:00 mark on
the 22" ring. Make the same mark below the line. Repeat at the
12:00 position. Then use a straight edge to draw the lines shown,
which define the size and shape of the ring segments (A). From
the 12:00 position on the 22" radius, use a square to measure
out 5-7/8" and draw the line shown, which defines the size and
shape of the top slats (B).
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