B975 User Guide
Chapter 7
Router Table Operation
53
7-16
Board widths indicated in the chart on the previous page will produce full size pins and
sockets at each board edge, for symmetrical or asymmetrical joints. Symmetrical joint board
widths may be reduced as required, resulting in smaller but equally sized pins and sockets at
each board edge. If board widths are reduced for asymmetrical joints, one edge of the board will
have a full size pin and socket while the other board edge will have a smaller pin and socket.
This may result in an unattractive joint.
7-17 Making a Box
Prepare four similar boards 3/4" thick
× 5-3/16" wide by about 12" long
[19mm×133mm×305mm], and two test
boards, 3/4" thick by about 4"[100mm]
wide.
Note:
Boards of different thicknesses may
also be joined.
IMPORTANT:
Read the whole chapter before routing any boards.
Symmetrical
Asymmetrical
Full size
pins and sockets
Full size
pins and sockets
When a symmetrical board width is reduced,
the joint will have smaller, but equal sized
pins and sockets at each edge of the board.
Width specified in the board width chart
results in full size pins and sockets at each
edge of the board.
Width specified in the board width chart
results in a full size pin at one edge of the
board, and a full size socket at the other edge
of the board.
When an asymmetric board width is reduced,
the joint will have a full size pin and socket at
one edge of the board, and a reduced size pin
and socket at the other edge of the board.
When the board width is reduced further,
the result is very narrow and fragile pins at
each edge of the board.
When the board width is reduced further,
the result is a very narrow and fragile pin at
one edge of the board.
Small pin
can break easily
Reduced size
pin and socket
Small pins can break easily
Reduced size pins and sockets