Re: [ATM] Making an exisiting mirror thinner

["Chris Todd" <christopher.todd@gmail.com>]

Bill (and everyone else who was kind enough to answer),

Yes, I was talking about a 12.5" mirror.

Judging from everyone's responses (all of which make a lot of sense),
it sounds like I would be better off selling the 12.5" and buying or
grinding a thinner mirror myself!  :-)

Thanks for the input, everyone.

Chris

On 10/9/07, William Marriott <bmarriott@pacbell.net> wrote:
> So, can we assume that you are talking about a 12.5"?
> Two options
>
> 1) Grind down the back.  Since it would take forever
> to do this manually, you would need to find someone
> with a Blanchard rotary grinder to do this, and it
> would still take a long time, Newport would probably
> be able to do this, maybe 2 hours shop time.
>
> 2) As Dominic noted, some way to cut it off, then
> grind the back flat.  Very time consuming.
>
> #1 I believe would definitely require refiguring of
> your glass, as even if properly annealed, with that
> much glass coming off, I would expect the figure to
> 'spring'
>
> #2 might be less stressfull, but still with that much
> material being cut off, I would think it would still
> spring.
>
> But, in the world of optics, you never know....
>
> Bill Marriott
> http://VAoptical.com
> http://StarlightOptical.com
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
>
_______________________________________________
ATM mailing list http://www.atmlist.net/