Atomic Filament

Not quite the same as Atomic Tactical....  One of the hard enclosure manufacturers I was looking at had a link to a U.S.-made filament company, Atomic Filament.  Of course it's 60% more expensive than Chinese filament.

Aluminum Extrusions

In poking around at 3D printers, I've become more interested in the utility of extruded aluminum for building stuff.  Some two decades ago, I'd rescued some from the scrap tub at work, and although I never used it for anything, it was sure fascinating for some reason.

There's a site 80/20 that sells components.  Their catalog is massive!