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Re: [ATM] Figuring Methods
Has anyone used RTV silicone as a polishing lap
material before?
And...
--- Mel Bartels <mbartels@bbastrodesigns.com> wrote:
> > Just my distillation, mostly because I have a
> > hyperboloid of about 1.7 or so indicating that I
> have
> > a really huge TDE and I have to dig a hole in the
> > center that's a little more than a micron deep.
> So
> > much for giving my arms a break!
>
> Hyperboloid can be thought of as:
>
> 1. too deep of center, or
The easier one to fix...
> 2. too deep of edge, or
The one impossible to fix (we can't put more glass on
the mirror)
> 3. the 70% zone is too high
>
Not as easy as digging a hole in the middle and
letting the edges alone, but more precise, I guess.
> Mel Bartels
>
>
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>
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