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

[Ken Hunter <atm_ken_hunter@yahoo.com>]

NO !!! The normal strokes will make the central portion of the disk deeper making the edge to ALWAYS appear turned down until the curve reaches the outer edge. Once you are fully polished - FULLY POLISHED - you can then start wondering about the APPARENT or REAL turned edge. They are different things and should be ignored until the time is right to worry about them. That is in the figuring stage NOT in the polishing stage.
   
  Ken Hunter
   
  

Anthony Anconetani <Anthony.Anconetani@genband.com> wrote:
  Hi Norm and all,

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.

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.

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

-Anthony
Round Rock TX

> -----Original Message-----
> From: atm-bounces@atmlist.net 
> [mailto:atm-bounces@atmlist.net] On Behalf Of Norm Prince
> Sent: Monday, May 21, 2007 8:50 AM
> To: atm@atmlist.net
> Subject: Re: [ATM] fishing for a lil polishing advice!
> 
> Thanks a ton yall for all the great words of wisdom...the 
> polishing is moving forward...
> 
> To be sure I wasn't concerned with the notions of figuring 
> just yet...just wanted to know how to, if necessary, to try 
> to work it back to a more spherical shape as i went...the 
> focault and ronchi shadows are the only way i know to see if 
> i have anything like the desired sphere. I wasn't sure if 
> the lack of sphereocity would shoot me in the foot as i kept 
> on polishing...it would really suck to have to back track at 
> this point.
> 
> So thanks again ...yall are the greatest. Lending your 
> know-how to folks like me with very few intellectual resources.
> 
> -norm prince-
> Georgia, USA 
> 
> 
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> 
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