Manual of Purpose-Made Woodworking Joinery

Panelled doors 75

Figure 5.1 (n) The 1.5 × 2.5mm slivers of mould-edge
have been pared off in the area of the mortised stile to
receive the machine-scribed top rail.

Preparation of door material

When crosscutting the various rails to size, they

should have about 20mm added to their length. This

additional amount is to give the tenons a 10mm

projection at each end. There are four good reasons for

this, as follows:

1. When deeping (ripping or deep- sawing along the
   grain lengthwise, parallel to the widest face of the
   timber), with a hand- saw to produce the cheeks of
   the tenons, sometimes the initial saw cut jumps on
   the end grain and can be a bit erratic until the cut is
   established after a few strokes. By having a waste-
   projection, any unwanted saw- cut marks will not
   matter;


2. When eventually gluing up, the wedges can be
   more easily held against the edges of the projecting
   tenons, to facilitate being driven in squarely;


3. A reasonable- sized projection makes it easier
   to saw off the waste material after gluing and
   wedging, leaving a fraction to be cleaned (planed)
   off;


4. The addition on the tenons gives more length of
   waste in the haunch area, from which to cut two

Figure 5.1 (o) Assembled, open joint, giving a view of
the shoulder related to the scribing.

Figure 5.1 (p) The assembled (upside- down joint) resem-

bling a part- stile and part- top rail of an ovolo- moulded

door, grooved to receive 9mm panels; note that – for this

example – the haunch was omitted.