[CCTALK] [CCTECH] scanners & circuit boards...

From: Tothwolf <tothwolf_at_concentric.net>
Date: Thu May 16 12:42:28 2002

On Thu, 16 May 2002, Davison, Lee wrote:
> Tothwolf wrote:
>
> > I'd be more concerned with accidentally scratching the glass bed of
> > the scanner due to sharp component leads.
>
> You can't scratch glass with metal. What you can do is leave a thin
> trace of metal on the glass. Gewelers rouge will easily remove this is
> nothing else will.

Are you sure? I've scratched glass with metal before, though not with a pc
board. Most component leads (excluding some of the newer resistors and
capacitors) are made of a tin plated copper or a copper alloy anyhow, so
it would seem that they would be less likely to damage something than say,
steel.

Since we are talking about scratched glass, do you have any ideas on how
to remove scratches from the face of a CRT?

> > I guess that there is a slight possibility of degrading the contents
> > of an EPROM if its window isn'tcovered.
>
> Glass is opaque to UV so you won't erase EPROMs either.

That is true. I had totally forgotten about that. The window of an EPROM
is made of quartz for that very reason. That is also why EPROMS are much
more expensive than a PROM that is exactly the same in all other aspects.

-Toth
Received on Thu May 16 2002 - 12:42:28 BST