Leigh rtj400 - Chapter 16 Quick Reference

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RTJ400 Dovetail Jig Chapter 16
Quick Reference
3/4" Box Joints
Board widths are determined by the total number of pins and sockets in the joint design and whether the joint is symmetrical or
asymmetrical. Use this chart to determine board widths up to 15⅝" [397mm].
Symmetrical Joints have a
full pin at each board edge.
Total no. of pins and sockets
is always an odd number.
Asymmetrical joints
have a pin on one edge and
a socket on the other edge.
Total no. of pins and sockets
is always an even number.
3/8" Half-Blind Box Joints
Board widths are based on the number of full tails
A
in the joint design. Board edges always end with
a half pin
B
. Board widths may be increased by ¼" [6mm] or decreased by ⅛" [3mm] if required.
Board Width Selection for Box Joints
3/8" Box Joints
Board widths are determined by the total number of pins and sockets in the joint design and whether the joint is symmetrical or
asymmetrical. Use this chart to determine board widths up to 16" [406mm].
Board Width Selection for
⁄
"
Half-Blind Box Joints
No. of Tails 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Inches
Min ⁄" 1 ⁄" 2 ⁄" 3 " 3 ⁄" 4 ⁄" 5 ⁄" 6 ⁄" 6 ⁄" 7 ⁄" 8 ⁄" 9 ¼" 10 ⁄" 10 ⁄" 11 ⁄" 12 ⁄" 13 ⁄" 13 ⁄" 14 ⁄" 15 ½"
Exact ⁄" 1 ⁄" 2 ⁄" 3 ⁄" 3 ⁄" 4 ⁄" 5 ⁄" 6 ¼" 7 ⁄" 7 ⁄" 8 ⁄" 9 ⁄" 10 ⁄" 10 ⁄" 11 ⁄" 12 ½" 13 ⁄" 14 ⁄" 14 ⁄" 15 ⁄"
Max 1 ⁄" 1 ⁄" 2 ⁄" 3 ⁄" 4 ⁄" 5 ⁄" 5 ⁄" 6 ⁄" 7 ⁄" 8 ⁄" 8 ⁄" 9 ¾" 10 ⁄" 11 ⁄" 12 ⁄" 12 ⁄" 13 ⁄" 14 ⁄" 14 ⁄" 16"
No. of Tails 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Millimeters
Min 17 37 56 76 96 116 136 156 175 195 215 235 255 275 294 314 334 354 374 394
Exact 20 40 60 79 99 119 139 159 179 198 218 238 258 278 298 318 337 357 377 397
Max 29 49 69 89 109 129 148 168 188 208 228 248 267 287 307 327 347 367 387 406
A
B
Symmetrical Board Width Chart for
⁄
"
Box Joints
Total Pins & Sockets 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41
Inches 1 ⁄" 1 ⁄" 2 ⁄" 3 ½" 4 ⁄" 5 ⁄" 5 ⁄" 6 ⁄" 7 ⁄" 8 ⁄" 8 ⁄" 9 ¾" 10 ⁄" 11 ⁄" 12 ⁄" 12 ⁄" 13 ⁄" 14 ⁄" 15 ⁄" 16
Millimeters 29 49 69 89 109 129 148 168 188 208 228 248 267 287 307 327 347 367 387 406
Asymmetrical Board Width Chart for
⁄
"
Box Joints
Total Pins & Sockets 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
Inches 1 ⁄" 2 ⁄" 3 ⁄" 3 ⁄" 4 ⁄" 5 ⁄" 6 ¼" 7 ⁄" 7 ⁄" 8 ⁄" 9 ⁄" 10 ⁄" 10 ⁄" 11 ⁄" 12 ½" 13 ⁄" 14 ⁄" 14 ⁄" 15 ⁄"
Millimeters 40 60 79 99 119 139 159 179 198 218 238 258 279 298 318 337 357 377 397
Symmetrical Joints have a full pin at
each board edge. e total number of pins
and sockets is always an odd number.
Asymmetrical joints have a pin on one edge and
a socket on the other edge. e total number of pins
and sockets is always an even number.
Symmetrical Board Width Chart for ¾" Box Joints
Total Pins & Sockets 3 5 7 9 11 13 15 17 19
Inches 2 ⁄" 3 ⁄" 5 ⁄" 7 ⁄" 8 ⁄" 10 ⁄" 11 ⁄" 13 ⁄" 14 ⁄"
Millimeters 60 99 139 179 218 258 298 337 377
Asymmetrical Board Width Chart for ¾
"
Box Joints
Total Pins & Sockets 4 6 8 10 12 14 16 18 20
Inches 3 ⁄" 4 ⁄" 6 ¼" 7 ⁄" 9 ⁄" 10 ⁄" 12 ½" 14 ⁄" 15 ⁄"
Millimeters 79 119 159 198 238 278 318 357 397