This is a mount for a ¾" Loc-Line NPT threaded connector to attach to my Husky Workbench. The part screws in using the existing mounts for the metal tool holders on the side with the handle.
I made this as part of my build of Adam Savage's Workbench LED light project
Loc-Line makes their parts available as .step files, so I printed out the threaded connector while I wait for the actual thing to arrive. It makes testing things out much much easier. One thing to note is that my adapter doesn't have a taper like other NPT threaded parts, which means it's a little bit loose until you screw it in more.
Prints on its side without supports
The author marked this model as their own original creation.