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Re: [ATM] Not tde or tue, important oblate spheroid, ellipsoid



P. S.   I will bet that within 6 weeks, here on this list someone will post
concerning their mirror and a link to a picture of a mirror that is terribly
oblate. They will ask what they have to do to fix that shape, that they have
been doing like they were told or read, using a short center over center
stroke to make a sphere and it is not getting better. They will say that
after some number of hours it might be getting worse.


***Key word = *Short* COC

1/3 COC stroke = perfect sphere every time *if done properly*. I've done it
for many hours and many other people have too.

I don't want to start an argument, I know other strokes work, and otherwise
people wouldn't use them. But it is Fact that 1/3 COC done properly will
give a good sphere. It's been proved many times. And yes the keyword in mine
is executed properly, but with practice it becomes second nature as does any
other stroke.

Mitch  

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