So I found this little brass knob in the clearance bin at the hardware store. It was only $1 dollar. I wasn't sure if it was solid brass or just brass plated, but I bought it because it was flat and round. It also had some threads cut into one end so I can eventually mount this on the end of a handle. Out of the package and I see that it comes into three separate pieces. The flat end was slightly rounded, and to get an even brand mark, the brand needs to be perfectly flat. I used a flat file and flattened the top surface of the brass.

I flipped my paper template face down and placed the brass piece on top, marking around the brass. I then used a spray adhesive and glued the brass to the template. I cut around the template leaving a little extra length and just folded the excess around the brass.