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RTJ400 User Guide
Box Joint Procedures - 3/4"
Chapter 11
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
11-3 Board Width Selection
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 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. Total number of
pins and sockets is always an even number.
11-5 Making a Box Note the symbols indicating either side
of the pin and socket boards can face in or out. With box joints,
the same edge of the board goes against the sidestop.
11-6 Prepare four similar boards about ¾"× 5" by about 12"
long [19mm × 117mm × 305mm]. For the quick fit test you will
need two test boards about ½" thick. Boards of different thick-
nesses may also be joined.
IMPORTANT: Read this whole chapter
before routing any boards.
11-7
Install the e10 eBush to the router table/router table insert,
set to 5. Or if you have already done the quick fit test, use this
setting instead.
11-4 Use the Quick Reference strip to determine the correct
straight bit and eBush combination.
IMPORTANT NOTE:
Read
the whole chapter before routing any boards, and see quick fit
instructions, Step 11-15.
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