Having cut out the halves of the shutter, solder the spindle wires to one
edge of each on what will be the back side. The wires must be so arranged
as to allow a quarter of an inch to project beyond the left edge of the
front, as the opening mechanism is situated on this side as the most
convenient for the operator.
Take a couple of metal discs, an inch or so in diameter, and bore a hole in
each near the circumference to fit the ends of the pivots fairly tight.
Three-eighths of an inch from this--centre to centre--bore and tap a hole
for a small screw. The tapping should be done with a taper tap and carried
just so far that the screw turns stiffly without danger of being broken off
by the screw-driver.
Next find the correct positions of the parts of the shutter and the spindle
sockets on the front of the holder, and mark them off carefully. Screw the
wooden parts of the sockets to the front. Four little "distance pieces"
should now be cut out of small tubing, or made by twisting tin round the
spindle, to place on the spindles between shutter and sockets, so that the
shutters cannot shift sideways.
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