Leigh D4R Pro - Page 48

SINGLE PASS HALF-BLIND DOVETAILS
40
Chapter 11 D4R Pro User Guide
11-1 Single Pass Half-Blind Dovetails:
➀
Pins
h
➁
Pin sockets
➂
Half-pins
➃
Half-pin sockets
➄
Tails
H
➅
Tail Sockets
The pins fit in the pin sockets. Joints should
almost always end each side with half-pins.
1
6
3
4
2
5
Depth of Cut
Depth of Cut
Tail Board
Pin Board
 IMPORTANT! Bit depths of cut for “single pass” dovetails
are not the same as for variably spaced joints.
11-2 Cutting Depth for Single Pass Half-Blind Dovetails
120-8
14˚
1
/ 4
"
(6.4mm)
19
/ 64
"
(7.5mm)
112-8
12˚
23
/ 64
"
(9.1mm)
101-8
10˚
3
/ 16
"
(4.8mm)
128-8
18˚
IMPORTANT: Add
~
1
/ 8
"
(3mm) to the depth of cut for pin board thickness
~
~
~
~
~
NOTE: See fig.11-9 on p.42 for range of tail board thickness
Pin Board Thickness
DEPTH
OF CUT
27
/ 64
"
(10.7mm)
80-8
8˚
DEPTH
OF CUT
Pin Board Thickness
~
1
/ 8
"
(3mm) min.
~
1
/ 8
"
(3mm) min.
~ Symbol for approximately
RECOMMENDED
NOTE: Bits 120-8 and 80-8 are included with the jig
•
Depth of cut must be as specified for each of the five
bits shown above. Exception: See fig.11-26. Note: Leigh
bits 101-8, 112-8 and 128-8 are optional.
•
Raising the bit above its specified cutting depth will
result in loose joints and may damage the jig, bit and/
or guidebush. A lower setting will result in tighter
joints that may not fit together.
•
Small Depth of Cut adjustments will allow for joint
fit tightness.
See 10-3 to 10-5 for why.
•
Choose one of the five,
1
⁄2"[12,7 mm] diameter dovetail
bits shown above.
•
Fit the provided Leigh e7-Bush to the router as shown
below and set at No.10, or use a standard
7
⁄16" [11,1mm]
guidebush (min. barrel depth
1
/4" [6,35mm] see p.69).