more photos at
Total Key Count
Dactyl keyboard total key count: 70.
Each side has: (5 rows × 6 columns = 30) -1 + 6 thumb keys = 35
Typing on the Dactyl Keyboard
3D Modeling, Keyboard Design, Clojure, and Emacs
truely enjoyed this video. You see 3D modeling software, 3D printing, keyboard design/making, using clojure to control, and finally, emacs too!
see his blog at 〔3D Printing With Clojure By Matt Adereth. @ http://adereth.github.io/blog/2014/04/09/3d-printing-with-clojure/〕