Well done. It looks impressive :-)
You are some steps ahead on my cells :-(
Steve was very easy to do.. almost al the holes i did on my hand machitta driller and the holes for the electrodes was made with the still driller..
i got a xy table and made out of my still driller a kind of low precision milling machine.. that worked well for plastic..
you just need the tools and the drill bits.. =) and sand paper to get the plastic back alive ... the electrical connection i made with allen screw and a screw pressed into it.
now with the foots looks like a spaceship