Making
Wooden Panels.
Wooden
Panels for bulkheads, chart tables and
transoms or rudders may
need to made edge to edge
jointed by boat builders.
Admittedly plywood is a convenient material for making large sheets.
However, if it is to have a natural finish, varnished or oiled plywood
will
never have the same look or feel as natural wood.
These assemblies will normally be made up from narrow planks.
The first problem is to plane the edges both square and straight so
they will
butt together without gaps.
Planning square level planks can be made easier by clamping two or more
in the
vice and planning them back to back.
Another method is to use a ‘shooting board’.
Depending
on the
length of the plank, using a jack (No5), Fore (No6), or a Jointer/Try
(No7)
plane will help eliminate any dips or bumps.
While it is possible with care to butt joint the planks, a more stable
panel
should have some form of edge to edge joint.
Tongue and Groove is probably the most common edge to edge joint.
The tongues and grooves can be cut fairly simply with a
Multi
Plane.
There are several other methods using dowels, biscuits, and splines.
And there are various jigs which can be bought to ensure alignment.
Long planks joined lengthwise like this
have a tendency to
warp and to open up at the ends of the joint.
To prevent the end of the
joint opening as it dries,
plane the plank slightly hollow so that the ends meet first when
clamping.
To minimise warping, alternate
the direction of the grain
in alternate planks.
Clamping is best done with
some form of Bar/Sash/Pipe
Clamp.
Use a minimum of three clamps.
There are other methods for
‘clamping’, you
can even use a ‘Spanish Windlass’.
However, having at least three
straight edges two below
and one above will help ensure that the assembly glues up
level.