23 Mar
2009
23 Mar
'09
8:28 a.m.
On Mon, 23 Mar 2009 12:07:40 -0300, Alexandre Souza wrote:
> I almost made a laser projector last year, but I
was having problems
> sourcing mirror material at the South Pole. One thought was gutting a
> laser printer or a copier (ISTR there's a front-surface mirror in
> there somewhere that's as wide as the paper path), but there was
> nothing suitable scrapped while I was down there. Now that I'm home,
> I'm keeping an eye out for a cheap/free printer to scavenge. I
> already have the semiconductor laser, naturally - the grocery store
> was selling laser levels for less than the cost of lunch.
Ethan, in a laser printer there is an hexagonal (or
n-sides, don't
remember) mirror that you can easily use to scan a horizontal section
The near paper width fixed mirror you are thinking of, is used to fold the
light path. Horizonal scan is easly is creared by a spinner and I can think
of several winchester drives that could provide the mechanical energy
for doing vertical scan. I understand the idea of repurposing a classic
diskdrive may be repulsive to some on this list :-)
Back under my rock
Bob Bradlee .. the other Bob