Secondary top finished

Have just completed the top end disc for the secondary coil. It's pretty much a carbon copy of the base disc but obviously doesn't require the extra holes for mounting to the base.

As well as the 8 4mm holes around the circumference there is also a central 10mm diameter hole which serves two purposes. Firstly, it allows the top-load to be electrically connected to the coil on the secondary. Secondly, in conjunction with the same hole in the base disc, it allows the whole secondary coil assembly to be mounted on the 10mm shaft of my coil winding jig.

The next job is to wind the coil. This will be the first time winding such a large coil but hopefully should go OK.