Re: [ATM] TUE Turned up edge

["Rodney Mayes" <rgmayes@bellsouth.net>]

One other thing that is strange.  I can't really tell I have a TDE with 
ronchi testing IROC, but it is very noticable OROC.
----- Original Message ----- 
From: "hermit" <hermit@outofoptions.org>
To: "Rodney Mayes" <rgmayes@bellsouth.net>
Cc: <atm@atmlist.net>
Sent: Sunday, January 22, 2006 6:33 AM
Subject: Re: [ATM] TUE Turned up edge


> Rodney Mayes wrote:
>
>>Hi,  I haven't posted in quite some time, but I could sure use some help 
>>at this point.  I definately have a turned up edge on my 10" f/7.5.  It is 
>>completly polished.  I believe I have a high center as well.  My question 
>>is this: can one begin parobolizing on a mirror with TUE?  Will deepening 
>>the center by parobolizing eliminate the TUE?  Or, is this just wishful 
>>thinking?  Would you try reducing the edge first then working the center? 
>>Work the center first?  Forgive my ignorance.  First time mirror maker 
>>here.  Any help appreciated.  Thanks in advance.  Rodney
>>_______________________________________________
>>ATM mailing list http://www.atmlist.net/
>>
> The 'standard' method of figuring 'turns' the edge digs the center anyhow. 
> I would try some slighty longer strokes than you are using now to see if I 
> could get a sphere first.
>
> Ken 

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