Any reason we couldn't fabricate a planar transformer from sheets of copper mounted to pins soldered to a PCB? Not a good solution for production, but DIY friendly for making one-offs.
I could see using a CNC router to machine traces into a copper sheet. Or if the traces are big enough, just freehand it.
I could see using a CNC router to machine traces into a copper sheet. Or if the traces are big enough, just freehand it.