TABLES OF COMMONLY AVAILABLE ROUTER BIT SIZES

THROUGH DOVETAIL ROUTER BIT COMBINATIONS

Combination Number

7° Dovetail Bit

Straight Bit

 

 

 

T1

3/4"

3/16"

T2

5/8"

5/16"

T3

9/16"

3/8"

T4

17/32"

13/32"

HALF-BLIND DOVETAIL BITS

 

Bit (Diameter and Angle)

 

Approximate* Depth of Cut

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7°

 

 

 

 

17/32"

 

 

13/32"

 

 

 

 

17/32"

 

14°

 

 

3/16"

 

 

 

 

9/16"

 

7°

 

 

3/4"

 

 

 

 

5/8"

 

14°

 

 

9/16"

 

 

COMBINATIONS FOR HALF-BLIND DOVETAILS

WITH THE PINS AND THE TAILS CUT SEPARATELY.

Combination

Large Dovetail Bit

Small Dovetail Bit

Approximate*

Number

(Diameter and Angle)

(Diameter and Angle)

Depth of Cut

 

 

 

 

 

 

H1

3/4"

14°

1/2"

14°

9/16"

 

 

 

 

 

 

H2

5/8"

14°

1/2"

14°

3/8"

 

 

 

 

 

 

H3

5/8"

7°

17/32"

7°

7/8"

 

 

 

 

 

 

H4

5/8"

7°

9/16"

7°

1"

 

 

 

 

 

 

H5

9/16"

7°

17/32"

7°

5/8"

*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.The actual depth-of-cut may be a little deeper or shallower than what appears on this table. Since vendors use

BOX JOINT BIT COMBINATIONS

Combination Number

Larger Straight Bit

Smaller Straight Bit

 

 

 

B1

1/2"

1/2"

B2

9/16"

7/16"

B3

5/8"

3/8"

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