Re: Silver materials

Wow silver. I would imagine that silver is extremely malleable
and could be thinned pretty easy with a hammer.
Personally I make pinholes the brute force way and use aluminum
or steel that have been discarded. I thin them with a grinder
both before and after drilling. I usually use a fine needle in a
collet. I inspect the hole using magnification, looking for
roundness, thinness and measure the diameter. I use a 7x loupe
that has a reticle on it. If you don't have a high powered loupe
you can use a 28-50 mm camera lens for inspecting the pinhole.
IMHO if you use too thin of material to start with you will find
it harder to make a decent pinhole. Having it thin at the hole
is an advantage in angle of view but increases the difficulty in
making the initial hole without distortion.

Good luck
David Balfour
http://www.doctorvision.com/pinhole/pinhole.html

--- Levi Brown <kerplop1@juno.com> wrote:
> I'm looking for some silver sheet material that is as small as
> .001"
> thick to as large as .003" thick. I'm tired of using brash
> shim stock
> and would like to make my lenses out of a more workable
> material. I have
> a couple of jewelry making catalogs that sell 34 gauge (.006")
> but I
> would like to find something that is possibly 36 or 38 gauge.
> (if that is
> possible)
> Anyway, let me know your thoughts on the matter.
>
> Levi Brown
>
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Received on Wed Nov 15 08:30:49 2000