[ATM] I think a TDE?

[quantemlp at hotmail.com (c f)]

Hello to all,

I have a question for the group as I am confused on this one thing.  I had a 
mirror, in a perfect sphere shape.  Had to go back to 220 due to a large 
scratch,  contaminated pitch from dog shaking sand/snow off.  Anyways, got 
it down, remade the pitch and polished away.  I went to test it yesterday 
and found that I have some kind of turned edge.  The center of the ronchi 
lines are straight up and down left to right, but the very bottom and very 
top of each line hooks in when inside ROC and hooks out when outside ROC.  
Sorry I did not get any photos of it, I will try to get some though.  Can 
anybody tell me what this is?  TDE or TUE.  and how to correct this issue?

Thanks to all and I look forward to the wisdom that will be brought before 
me to help me out.

Clear skys to all

Charles in Wilmington

"Insanity is a temporary state of mind caused by mirror making"

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