I made this as an art project many years ago, thought it was interesting enough to display here. Its a fireproof seamless steel jewelry box lined with cedar and rockwool.
Action shot of installation of filter cloth into a filter press plate.
This was a production run of custom welding power distribution stands for the field. They had a 100A power feed to connect to a generator with three 60A power pin and sleeve receptacles to connect the field welders.