Brass sheet was cut to size for the bases (10m x 5mm) with the corners rounded off and the strip around them (1mm). Using Blu-Tak to hold things in place some flux was applied to the areas to be soldered;
I had trouble getting the solder off the coil onto my soldering iron but after a suggestion by my good modelling buddy Markus Lack I flattened out some solder and cut it into small strips for greater control (which worked beautifully);
The parts were cleaned up using a fibre glass pen and some wet and dry paper then glued to the back of the turret;
Hopefully these will look better under a coat of paint.
I suppose I should have done this in the first place as superglue never really works that well with brass and plastic, especially when you have such small areas to work with. With a bit of luck I won't knock these off again :o)