r of a circle or the
thickest part of the neck.
We shall now use a strong coarse wood file and turn the instrument round
and about, work away the neck until just outside of what will be left
when the polishing down takes place.
The curves should all be balanced well even while in the rough and the
contour viewed from all points should be regular. The other end of the
graft will require the same kind of attention, care being taken that
too much wood is not removed. The level from each end must be seen to,
leaving just sufficient wood to allow for fining down; the proportions
must be well calculated, thus the upper end under the nut will be hewn
down thinner than the part approaching the button, the line from each
end being made quite even and the curving of the semi-circular shaft
gradually tapering upwards. The glass-paper file before referred to
will now come into service; it should be made of a nicely-squared plate
of wood about six inches in length by about two and a half inches in
width, with about one third of an inch in depth. We may call one side
the front, the other the back; the edges of the former should be rounded
down to a semi-circular form. All we have to do in making this useful
file complete is to lap a piece of glasspaper of the degree of grain
required round it, nearly meeting at what may be called the back for
the time being. The surface with the rounded edging, or, as we have
called it, the front, covered with rather strong grained paper, will
be worked to make an even course all along the shaft, guarding all the
while against working too much at one spot. The paper file may, after
a sufficient working along the surface, be exchanged for one or two
degrees finer, rubbing it in the same manner. For good mathematically
even work, the graft should be turned round frequently, so that the
light may throw up any little inaccuracies that may occur and which
require individual attention. Here it may be remarked that if possible
all repairing would be best done in an apartment that has as little
reflected light as possible. The reason for this will soon be apparent
when the fining down or polishing stage is commenced. One window, and
that not too large, will be found advantageous. Little irregularities,
however trifling, are best seen under such a light. Much rough work
may very possibly be the consequence of badly-arranged light rather
than inability or indifference of the workman. Repairs executed under
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