Re: Home made Lenses ( was Large Format Lens Question. Low tech answer)

From: Halvor Bjørngård ^lt;>
Date: 02/27/05-10:07:23 AM Z
Message-id: <>

John Cremati wrote:
> I have a book called Armature Telescope making where they get into
> making telescope lenses but you talk about low tech their method is it......
> They start by taking two glass blanks and start grinding on themselves with
> various grit sizes in between. Eventually one piece will be concave, and
> the other rounded..... The Telescope people used the concave piece ,
> mirrored it and built a telescope around it............
> I hear there is a book call Armature Lens Making that goes into it a
> little more detail ......... I used to have a old lens making machine that
> was simply a lens mold rotating on a centered arbor.... You would put the
> glass by doping with hard wax on a arbor and then put this in contact with
> the mold..........They still make these machines... Salem Distributing sells
> the various grits, polishes, exc.....

Thank you, this gives a bit direction to search in. Wanted to try this
once at least.

bedtime now :)

Received on Sun Feb 27 10:07:36 2005

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