Board-to-Board high current pin header for planar PCB winding

Solution 2 - backplane with quick-connect disconnects:

1. Install flush right-angle male quick-connect disconnects on each PCB
2. Create a motherboard that sits vertically against the stack
3. Install on that motherboard vertical female quick-connect disconnects
4. Insert each daughterboard into the motherboard to create a stack
5. Install the stack of daughterboards into the ferrite core

Solution 1:

1. Install broaching PCB PEM nuts on each hole. Pick ones whose thickness results in the desired spacing between boards
2. Stack the boards
3. Insert a long screw from the top with a smaller diameter than the thread of the nuts, so that it can slide in unimpeded
4. Finally, insert it to your final output conductor (e.g. a bus bar pr a motherboard)
5. Fasten that screw to a nut at the bottom to clamp all the boards an the final conductor tightly, so that current flows primarily from nut to nut (rather than through the screw).

{Source: my picture}