I was surfing for techniques on how to drill with a .4 mm bit.
I found this video on youtube about a diy
electrical
discharge
machining drilling apparatus, which sounds pretty great.
[
www.youtube.com]
she says she uses 1 amp at 5 volts. Graphite pencil lead for mechanical pencils would be perfect for the electrode.
I think a setup like this could be assembled for only a couple dollars, maybe even free if you take apart the right printers.
