[pure-silver] Re: Test Negatives
- From: DarkroomMagic <info@xxxxxxxxxxxxxxxx>
- To: PureSilverNew <pure-silver@xxxxxxxxxxxxx>
- Date: Thu, 24 Nov 2005 19:29:42 +0100
Frank
Thanks again, I just ordered two!
Regards
Ralph W. Lambrecht
http://www.darkroomagic.com
On 2005-11-24 19:02, "Frank Filippone" <red735i@xxxxxxxxxxxxx> wrote:
> Ralph.. I bought a mask made for semiconductor manufacturing. It is an old
> item, so of no commercial importance. The lines are etched on with accuracy
> to 5 microns. It is a B+W Mask only of a geometric pattern. It works quite
> well if you are only interested in alignment. The mask is so accurate, that
> any error is in your setup. You can examine the projected image on the
> baseboard or make prints and check them out.
>
> It is thin glass, about 6 inches square...
>
> I got it from
>
> http://www.goldmine-elec.com
>
> The item I have is about 10 years old, but they still have them in stock......
>
> http://www.goldmine-elec-products.com/prodinfo.asp?number=G14259&variation=&ai
> tem=2&mitem=2
> <http://www.goldmine-elec-products.com/prodinfo.asp?number=G14259&variatio
> n=&aitem=2&mitem=2>
>
> BTW, they claimn the masks are .5 inches thick.. no way.... they should be
> around 0.100 inches thick or thinner.....
>
> It may or may not do what yo want, but it is only $12.......!
> Frank Filippone
> red735i@xxxxxxxxxxxxx
>
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