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I made a coil-winder out
of an old electric sewing machine, and purchased a quantity of
Osmor coil-formers and cans from Gilbert's in Anzac Ave. The
first few I unfortunately sealed the coils in place on the formers
with 'Bees-wax', which slowly softened with the heat build up
internaly in the cabinet by the valves etc, and over a period
of time the coils slowly moved down on the former, thus de-tuning
them in the cans. After working out the problem, I modified the
making of the coils by dipping them in 'shellac', and letting
it set before assembly and final tuning. |
