I have the manuals for the Oliver Audio Engineering (OP-80a) and Proko
Electronics
paper tape reader on my web site here:
I might be able to dig up one or two of the 9 position photo detectors
if I dig deep enough into storage
for someone who is serious about building one.
Bob
William Maddox wrote:
  David Griffith wrote:
  Sidenote: how hard would it be to make a paper
tape reader and punch
 from
 scratch?  The idea is to have a lightweight unit for playing with my
 SBC6120 and perhaps Altair reissue/clone (if and when I get one). 
 Back in the Altair days, there was a company called Oliver Audio
 Engineering
 that made a small optical papertape reader for hobbyist use.  You
 pulled the
 tape through manually.  The read strobe was generated by sensing the
 sprocket
 holes.  It would not be difficult to recreate this device, or something
 similar.
 I think you'd need a machine shop and considerable skill to make a
 punch from
 scratch, While it would not be beyond the capabilities of those folks
 who build
 clocks and engines from scratch, you're best bet is to try to pick up
 one on
 eBay.  They show up with considerable regularity, and usually go for
 $100-$300.
 --Bill