That chassis was quite the epic - front and back panels were solid 15mm copper plate , I got them dead cheap on a surplus find but they would be insanely expensive to buy.
sorry about the up coming thread crap guru ;-)
Not so much steam punk but resourceful recycling
My Kumisa chassis - top plate with hand made transfer and brushed aluminium, chassis was a discarded telecom switch box

Unity gain "bootstrapped" tube buffer

SOHA II - re-used a sturdy chassis from a control unit that I found in a surplus store - made the transfer for the top


An early prototype - used a power supply base - original surplus had 3 units bolted next to one another.


I am planning a full steam punk rework on this latest project - killer hybrid power amp , sounding glorious.

..dB