Look at this ~6000nm Intel plant from the late 1970s. It was extremely high tech at the time, but nothing there seems inherently like it cannot be fully automated, simplified and shrunk down to my $1M FAB machine.
You can get down much lower than $1 million if you're willing to live with a feature size of 10+ microns.
The ghetto method is "point a projector through the top of a microscope" so that you don't have to bother with photomasks. Not counting the other steps.
irc.freenode.net #homecmos ... although they are taking a break for a while, so I also recommend ##hplusroadmap and #dlp3dprinting and #reprap for now.
You can get down much lower than $1 million if you're willing to live with a feature size of 10+ microns.
http://code.google.com/p/homecmos/
http://homecmos.drawersteak.com/wiki/Main_Page
http://diyhpl.us/wiki/homecmos/
The ghetto method is "point a projector through the top of a microscope" so that you don't have to bother with photomasks. Not counting the other steps.
irc.freenode.net #homecmos ... although they are taking a break for a while, so I also recommend ##hplusroadmap and #dlp3dprinting and #reprap for now.
Btw, there's a youtube feature for "start 7 minutes in" like this: https://youtube.com/watch?v=ll_-_ngu4Gg&t=7m