Shall we venture backwards in time to see other design options that I came up with?
My building blocks:
I typed A-Z and 0-9 into an Illustrator document. I then printed it out several times, and cut some of the prints into strips using a paper cutter. I took photos of my various layouts as I made them. I know I could get a cleaner final file by splitting the elements in Illustrator, but it was fun fooling around with scraps of paper and I was able to try out different things quickly.
I got the letterform splitting idea from stumbling across the work of Cecil Touchon last week