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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
> 
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


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