By the way,
the earth is round... 
 I'm glad we can agree on this. Of course the Earth is round.
 It's also hollow.Oh it is a donut!>
 To try and turn this thread around: I'm looking to make an extended
 memory controller for my pdp8/L. I've got a wire wrap backplane and
 enough cards to make it work but I've never done wire-wrap on this sort
 of scale.
 I've got an old Radio Shack Wire wrap tool and a lot of wire. Is there
 any sites that discuss how to do reasonable wire-wrapping? 
 
  I think back then they used different wire wrap sized wire on the back
planes