I had some of these made for me. I want to reproduce them to the best
of my ability. Curious as to how these were pressed out or what I
could use or purchase to duplicate these. I know it started as a piece
of rectangle aluminum and were pressed to form. Then, a square hole
was punched in the middle. Any ideas on the process here? I have a
small garage shop and cant go purchase some thousand dollar machine. I
searched on the web some and saw these things called "fly presses"
that use a weighted wheel and a long threaded shaft that create heavy
downward force.

Pics at http://home.comcast.net/~kailamenjaro/