[morzh]

Before I showed the way I cut the cap.
Now I have drilled the holed through the Positive's rivets, and I also drilled one central hole for the common Negative conductor.
I countersunk the central hole with the thought of using a copper rivet as the holder for teh central conductor. The barrel is shorter than the base which is 1/2" and so it would not go through. Also countresinking from both ends will ensure the extra creepage between the central conductor and the Plusses.

   
   

The rivet is in place. As I need the channel, I knocked out the remaining piece of the mandrel with the mandrel itself, and the barrel became a via.

   
   
   

Now I made the central conductor from a Romex wire: it is copper and is very stiff and solderable.

   

Formed a loop and soldered it in place. Now I have the outer negative terminal and the supporting pole inside the cap for the minusses.

   

Now I put the wires for the cap's plusses in, and solder then in place, and also the film cap 1uF as it will not need the support the small aluminum cans will. To explain, I need 3x1uF and one 2 uF caps. I have 2 aluminum cans of 1uF 450V (Good brands and high ripple, so will last), one film cap of 1uF and one can of 3.3uF which is unimportant as the circuitry does not require precise cap in those filters.
   

Now solder all the caps to the central pole after strategically positioning them to the places they will remain in.

   


Now I cut the Plusses wires to size and solder them to all the caps. The resulting construction is very stiff and will not bend on its own.