Bits for the RTJ400

Bits for the RTJ400 Dovetail & Box Joint Jig

High Quality Bits
Leigh Brand carbide-tipped router bits are among the best you can buy. They are made with high quality C2 and C3 micro grain carbide for long bit life. Each bit is honed to a fine edge with 600 grit diamond wheels for smooth, efficient routing. All shanks are 1-3/4" long to handle the thickness of the finger assembly or accessory template. Leigh router bits are manufactured to ISO 9002 standards.

 

Shank Size
The RTJ400 is shipped with 1/2” shank bits designed to work with the e10 eBush. Optional 1/2”, 8mm and 1/4” bits are available for additional sizes of through dovetails, half-blind dovetails and box joints. All 8mm shank bits require an 8mm collet or a 1/2” to 8mm collet reducer part 172-8.
 


Through Dovetail Bit Selection

All Leigh dovetail jigs use 8° dovetail bits for through dovetail tails and one of three straight bits for pins. See cutting depth chart below. The dovetail bit’s working depth must be equal to or slightly greater than the thickness of the pin board or drawer front. Always choose the smallest dovetail bit relative to the pin board thickness, along with the matching straight bit, for that hand-cut look. Choose your bit(s) in the Bit Selection chart below.

 

Full Pitch and Half Pitch Through Dovetails

“Pitch” is the distance between the center of one pin to the center of the next pin. Full pitch through dovetails on the RTJ400 have pin centers at 1-1/2”. Closer pin centers, or Half pitch dovetails can be routed by using the e7 eBush along with the four smaller through bits. Pin centers for half pitch through dovetails are 3/4”.



The dovetail bit's working depth (see column B in the chart below) must be equal to or slightly greater than the thickness of the pin board (drawer front). Always choose the smallest dovetail bit (column A) relative to the pin board thickness, to achieve classic hand-cut looking joinery. Use the matching straight bit and template guide bushing indicated in the chart.

Full Pitch Through Dovetail Bit Selection
DOVETAIL BITS
ROUT THE TAILS
Leigh Bits for
Through Dovetails
A
Overall
Diameter
B**
Cutting
Depth
Range
C
Shank
Diameter
D
Shank
Length
E
Overall
Length
F
Angle
Use with
Straight
Bit No.
Use with
eBush* or
Guide Bush(GB)
Price

50-8
1/4"Up to 1/4"8mm *1 3/4"2"160 or 180 or 180C **e10

$29.00 CDN


60-8
5/16"Up to 3/8"8mm *1 3/4"2 1/8"160 or 180 or 180C **e10

$29.00 CDN


70-8
3/8"1/4" to 1/2"8mm *1 3/4"2 1/4"160 or 180 or 180C **e10

$29.00 CDN


75-8
7/16"3/8" to 5/8"8mm *1 3/4"2 3/8"160 or 180 or 180C **e10

$29.00 CDN


80-8***
1/2"1/2" to 13/16"8mm *1 3/4"2 9/16"160 or 180 or 180C **e10

$29.00 CDN


*The e10 eBush and Bit 143-500 come with the RTJ400.
* Spiral upcut bits rout cleaner & faster, leaving a smoother finish
Note: All Leigh jigs require a router fitted with a guidebush. Click here for Guidebush Selection.
  


Half Pitch Through Dovetail Bit Selection

The dovetail bit's working depth (see column B in the chart below) must be equal to or slightly greater than the thickness of the pin board (drawer front). Always choose the smallest dovetail bit (column A) relative to the pin board thickness, to achieve classic hand-cut looking joinery. Use the matching straight bit and template guide bushing indicated in the chart.

Half Pitch Through Dovetail Bit Selection
DOVETAIL BITS
ROUT THE TAILS
Leigh Bits for
Through Dovetails
A
Overall
Diameter
B**
Cutting
Depth
Range
C
Shank
Diameter
D
Shank
Length
E
Overall
Length
F
Angle
Use with
Straight
Bit No.
Use with
eBush* or
Guide Bush(GB)
Price

50-8
1/4"Up to 1/4"8mm *1 3/4"2"140-8 or 170C **e7

$29.00 CDN


60-8
5/16"Up to 3/8"8mm *1 3/4"2 1/8"140-8 or 170C **e7

$29.00 CDN


70-8
3/8"1/4" to 1/2"8mm *1 3/4"2 1/4"140-8 or 170C **e7

$29.00 CDN


75-8
7/16"3/8" to 5/8"8mm *1 3/4"2 3/8"140-8 or 170C **e7

$29.00 CDN


*The e10 eBush and Bit 143-500 come with the RTJ400.
* Spiral upcut bits rout cleaner & faster, leaving a smoother finish

Note: All Leigh jigs require a router fitted with a guidebush. Click here for Guidebush Selection.
  


Half-Blind Dovetail Bit Selection

In half-blind joints, pins and tails are routed with the same dovetail bit at the same depth of cut. The bit angle determines the nominal depth of cut, therefore, a bit of a given angle must cut at or very near a specific depth in order to make pins and tails fit together properly. Choose a half-blind bit with a cutting depth at least 1/8” less than the pin board thickness. Leigh offers five half-blind bits to suit board thicknesses from 1/2” to 7/8” or greater. For rabbeted or lipped drawers, choose a bit with a cutting depth slightly less than the rabbet’s shoulder depth.

The dovetail bit's working depth (see column B in the chart below) must be equal to or slightly greater than the thickness of the pin board (drawer front). Always choose the smallest dovetail bit (column A) relative to the pin board thickness, to achieve classic hand-cut looking joinery. Use the matching straight bit and template guide bushing indicated in the chart.

Half-Blind Dovetail Bit Selection
DOVETAIL BITS ROUT
THE TAILS AND PINS
Leigh Bits for
Half-Blind Dovetails
A
Overall
Diameter
B**
Cutting
Depth
Range
C
Shank
Diameter
D
Shank
Length
E
Overall
Length
F
Angle
Use with
eBush* or
Guide Bush(GB)
Price

112-500
1/2"19/32"1/2"1- 3/4"2-9/16"12e10

$32.00 CDN


120-500
1/2"1/2"1/2"1 3/4"2-1/2"14e10

$32.00 CDN


128-500
1/2"3/8"1/2"1-3/4"2-3/8"18e10

$32.00 CDN


*The e10 eBush and Bit 143-500 come with the RTJ400.
* Spiral upcut bits rout cleaner & faster, leaving a smoother finish

Note: All Leigh jigs require a router fitted with a guidebush. Click here for Guidebush Selection.
  


Box Joint Bit Selection

BOX JOINT BIT SELECTION

Leigh BitsA
Bit
Diameter
B**
Max. Cutting
Depth
C
Shank
Diameter
D
Shank
Length
E
Overall
Length
F
Use with
Collet/Collet
reducer
G
Use with
eBush
Price

163 High Speed Steel
3/32"3/8"1/4"2"2"1/4"e10

$25.00 CDN


166* High Speed Steel
3/16"5/8"1/4"1-3/4"2-7/8"1/4"e10

$27.00 CDN


166C* Solid Carbide
3/16"5/8"1/4"1-3/4"2-1/2"1/4"e10

$38.00 CDN


143-500 * High Speed Steel
3/8"1-1/4"1/2"1-3/4"3-3/4"1/2"e10

$30.00 CDN


173-500* High Speed Steel
3/8"1-1/4"1/2"1-3/4"3-3/4"1/2"e10

$45.00 CDN


173-500C* Solid Carbide
3/8"1-1/4"1/2"1-3/4"3"1/2"e10

$90.00 CDN


*The e10 eBush and Bit 143-500 come with the RTJ400.
* Spiral upcut bits rout cleaner & faster, leaving a smoother finish

Note: All Leigh jigs require a router fitted with a guidebush. Click here for Guidebush Selection.
  


Collet Reducer 172-8
 
One 1/2" to 8mm collet reducer 1 1/4" long. Required for all 8mm shank bits (70-8, 75-8, 80-8, 140-8, 170 and 170C).

Item no. 172-8

 

$13.00 CDN


 

Accessory Kit - RTJ400
 
Includes 8° through dovetail bits 50-8(1/4"), 60-8(5/16"), 70-8(3/8") and 75-8(7/16"), straight bit 140-8, half-blind bits 112-500(12º) and 128-500(18º), box joint bits 163(3/32") and 166(3/16"), one e-Bush (e7) and one collet reducer 172-8 (1/2" to 8mm).

For use with the RTJ400

Item no. ACRTJ

 

$229.00 CDN


 

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