[chbot] UV EPROM eraser to give away

[Chris Hellyar]

Hurro..

For a bit of trivia, generally UV erasers are not a point source of
light, they're a tube of some sort...  This means your negative/positive
has to be well flattened/ held against the sensitive PCB otherwise you
get a fuzzy image on the resist in one axis (The long axis of the tube).

I used to use a UV suntan lamp for riston board for that reason, as it
was a relatively directional light..  I trued a UV tube and found that
it was hard to get the negative really flat on the riston, and putting
glass on top increased the exposure time by 3x although modern
photoresist might be better in that sense...

As always, YMMV and the experimentation is always half the fun. :-)

Cheers, Chris H.

On Wed, 2011-01-19 at 00:21 +1300, Paul Davey wrote:
> On Wed, Jan 19, 2011 at 12:06 AM, Volker Kuhlmann
> <list0570 at paradise.net.nz> wrote:
> > I realise this is museum equipment that I saved from going straight to
> > landfill, but in case anyone still has a use for it - I guess here might
> > be a good place to ask. Free to a new home:
> >
> > UV EPROM eraser, mains powered with NZ mains plug, timer. Functional.
> >
> > Email me offlist.
> >
> > Volker
> >
> > --
> > Volker Kuhlmann
> > http://volker.dnsalias.net/
> 
> I'll take it if no one wants it, I don't have any EPROMs but it should
> be able to easily formed into a UV lightbox for exposing
> photosensitive PCBs without doing it any damage.
> 
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz
> http://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
> Web site: http://kiwibots.org
> Meetings 3rd Monday of each month 6.30pm Science Alive Seminar Room
> 
> When replying, please edit your Subject line to reflect new content.