Someone requested I post some of the other things I have made, so here is a shiny new stamping die
Size: 3" x 3" x .375
Depth of cut: .25mm
Number of runs: one rough, one finish, one hole pattern.
Tools: .125 2-flute endmill, .062 2-flute endmill
Total machine time: 2.75 hours.
After the job was done, I file the outside edges (they come out sharp) and use a buffing wheel in my dremel to clean up the "working" surface.