[no subject]

Signficantly, as long as you can get ROM listings, I can't think
of anything in the Apple II that was not a common part (and most likely,
the Apple I was similar, since they wouldn't have wanted the expense
of special parts).  You'd have to track down the 6502, and you might
have to make do with LS or cmos versions of the logic ICs, and you'd
either have to adapt the circuit to RAM that you could easily find,
or dig around until you did find some old RAM, but it's not like
later equipment where special parts were used.

Likewise, my OSI Superboard which I bought twenty years ago because
I couldn't afford an Apple II, would be easy to duplicate, because
there are not special parts.  Indeed, it would be simpler because
I could replace the RAM with a single IC (and get more RAM at the
same time), and if I scrapped the video display (it is way too small)
and use it with a terminal, it would be all very simple.

As for blank boards, let's not forget that at one point, there
was a big clone industry.  Not the Franklin type clones, but
the no-name rip-offs.  My impression was that it started
out as a bare-board movement, where you'd buy a blank board
and populate it yourself.  Only later could you buy the boards
pre-assembled.  Somewhere, I have a 128K card, and an 80-column
card, that are both blank.

Find  a stash of those boards, and you can build your Apple II
clone.

On the other hand, unless one is trying for something smaller
or faster, there should be more than enough Apple II's, be
they originals or clones, to keep everyone who wants one
satisfied.  This is true of most of the low-end consumer
computers.  I don't quite see the point of building an Apple II
at this point when you can so easily buy one.

Of course, when it comes to peripherals, that's a different
matter. Some were likely to have had a limited market, so
they aren't plentiful.  And things like disk drives, as someone
pointed out, will become increasingly rare with time, since
you can't use just any drive and like all mechanical things,
they breakdown and get thrown out.

   Michael