The freshly wound secondary coil. The coil former is 68mm pvc pipe, dried, wound and varnished three times. As before, the winding jig was made up of junk box stuff, this time I used a battery operated drill to turn the former, which was much better. Total winding time was 30 minutes. Once wound, I switched back to the slow mains operated motor for the varnishing coats.
I used the same coil as for my VTTC design.