Re: [ATM] fishing for a lil polishing advice!

[Mike Lockwood <melockwo@uiuc.edu>]

Hi,

Anthony Anconetani wrote:
> I'm a rooky at this mirror stuff too. I'm behind you a little bit. I've
> only gotten my 6f6 to 220 grit. But I did put together my Foucault
> tester this weekend for the purpose of checking the approximate center
> of curvature.

That's a good excuse to put it together.

> Back on subject, like you I was going to use the Foucault tester to
> monitor the developing sphere as I progressed through the polishing
> phase. My goal was to catch any TDE as quick as possible.

You almost seem to expect TDE.  Many times what we expect materializes.

> So question for the experts, does it make sense to use the Foucault test
> throughout polishing to monitor the developing sphere for TDE?

Yes.

But it makes the most sense right now to pay attention to fine 
grinding so that you do not GRIND in the TDE, rather than polishing it in.

	Mike Lockwood

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