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RTJ400 Dovetail Jig
Chapter 16
Quick Reference
Printed in Canada
3/16" 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 8" [203mm] for " joints. For wider boards, see leighjigs.com.
Asymmetrical Joints have a pin at one edge and
a socket at the other. e total number of pins and
sockets will always be an even number.
Symmetrical Joints have a full pin at
each board edge. e total number of pins and
sockets will always be an odd number.
3/32" 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 4"[102mm] for " joints. For wider boards, see leighjigs.com.
Symmetrical Joints have a full pin at
each board edge. e total number of pins and
sockets will always be an odd number.
Asymmetrical Joints have a pin at one edge and
a socket at the other. e total number of pins and
sockets will always be an even number.
Board Width Selection
for Box Joints cont.
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 ¾" 2 ⁄" 2 ⁄" 2 ⁄" 3 ⁄" 3 ⁄" 4 ⁄" 4 ⁄" 4 ⁄" 5 ¼" 5 ⁄" 6 ⁄" 6 ⁄" 6 ⁄" 7 ⁄" 7 ⁄" 8"
Millimeters 14 25 34 44 54 64 74 84 94 104 114 124 133 144 153 164 173 183 193 203
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 ⁄" 1 ⁄" 1 ⁄" 2 ⁄" 2 ⁄" 3 ⁄" 3 ⁄" 3 ⁄" 4 ⁄" 4 ⁄" 5 ⁄" 5 ⁄" 5 ⁄" 6 ¼" 6 ⁄" 7 ⁄" 7 ⁄" 7 ⁄"
Millimeters 20 29 40 49 60 69 79 89 99 109 119 129 139 148 159 168 179 188 198
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 ¼" 1 ⁄" 1 ⁄" 1 ⁄" 2 ⁄" 2 ¼" 2 ⁄" 2 ⁄" 2 ⁄" 3 ⁄" 3 ⁄" 3 ⁄" 3 ⁄" 3 ⁄" 4
Millimeters 7 12 17 22 27 32 37 42 47 52 57 62 67 71 77 82 87 91 97 102
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 ⁄" 1 ⁄" 1 ⁄" 1 ¾" 1 ⁄" 2 ⁄" 2 ⁄" 2 ⁄" 2 ⁄" 2 ⁄" 3 ⁄" 3 ⁄" 3 ½" 3 ⁄" 3 ⁄"
Millimeters 10 60 20 25 29 34 40 44 49 54 60 64 69 74 79 84 89 94 99
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