Ok GUYS, One at a time. Maybe I just will use a triple knife, one for each input. Let me call GoldPoint," Hello, do you cary any FrankenstEEn, uh I mean, gold plated knife switches?"
Secondly, I used to weld AlCOA aluminum .020" thick for a pipe factory. It came in giant 7,000 lbs. rolls.
Lastly, I doubt that you can beat the OLD Bell System switches, and other 'Frankenstein' equipment. I was fascinated by the gigantic batteries and insulators. Then the clicking from systematic relay sequencers. a clic, a clic, a clic-clic-clic, double-clic-clic like drum section of a marching band. Rythemic and never ending, it caught my OCD like a fly trap. And the tubes, God, the tubes...