Routing with a Template
The guide bush is used in conjunction with a
template when the routing operation is repetitive
or the workpiece is complex in shape. The
template is fixed to the upper surface of
the workpiece. A cutter is chosen with a
diameter which will pass through the
centre of the bush leaving enough
clearance. The cutter can be straight
or shaped. The router can then be
guided around the template so that the
shape of the template will be replicated.
Making the Template
The template is cut from 6mm or
1
/4” MDF,
plywood or plastic to the shape required. The
guide bush offset needs to be allowed for when
calculating the shape of the template. The
template must be smaller by an amount equal to
the difference between the ‘outer edge of the
guide ring’ and the ‘outer edge of the cutter’.
See below for the offset calculation. The edge of
the template must be free of imperfections as
these will be replicated in the final workpiece.
Calculations for template offset
To Next Page
Loading...
