[morzh]

So Sunday I cut the rolled part of the bottom off the Sprague electrolytics.

Taking out the threaded part was easy: I grabbed the rubber ring with large pliers and it just came out without much sweat.

I broke off the aluminum threaded rod: there is no way to solder to it and then it is aluminum.

I gave the shells vinegar bath that dissolved all dry salt deposits.

Then I chipped off dry rubber off of the threaded plugs.

Here's what I got now:

   

As you could see, I use screws and ring terminals to fashion the contact. The plugs are intact and will be glued back in the shells.

I will route a small groove in them to put the negative wire through and will solder it to the shells. I need to think of how I will make the shell to contact the ring on the chassis, ma6be make a small receptacle cup from another old cap.