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THROUGH DOVETAIL ROUTER BIT COMBINATIONS
TABLES OF COMMONLY AVAILABLE ROUTER BIT SIZES
Combination Number
T1
T2
T3
T4
7° Dovetail Bit
3/4"
5/8"
9/16"
17/32"
Straight Bit
3/16"
5/16"
3/8"
13/32"
HALF-BLIND DOVETAIL BITS
Bit (Diameter and Angle)
Approximate* Depth of Cut
Combination
Number
H1
H2
H3
H4
H5
Large Dovetail Bit
(Diameter and Angle)
17/32"
17/32"
9/16"
5/8"
7°
14°
7°
14°
13/32"
3/16"
3/4"
9/16"
COMBINATIONS FOR HALF-BLIND DOVETAILS
WITH THE PINS AND THE TAILS CUT SEPARATELY.
3/4"
5/8"
5/8"
5/8"
9/16"
14°
14°
7°
7°
7°
Small Dovetail Bit
(Diameter and Angle)
1/2"
1/2"
17/32"
9/16"
17/32"
14°
14°
7°
7°
7°
Appr
oximate*
Depth of Cut
9/16"
3/8"
7/8"
1"
5/8"
The actual depth-of-cut may be a little deeper or shallower than what appears on this table. Since vendors use
different manufacturing tolerances on bit dimensions, use the manufacturer’s advertised bit dimensions only as
a guide. Remember that a small amount of variation within tolerances can have a large impact on the final depth-
of-cut.
*
BOX JOINT BIT COMBINATIONS
Combination Number
B1
B2
B3
Larger Straight Bit
1/2"
9/16"
5/8"
Smaller Straight Bit
1/2"
7/16"
3/8"