Thanks for that.
I was directed to this site by the ATM who gave me the blanks and this blog describes working with a TDE .
http://atm-workshop.com/mirror14-log.html
Perhaps it is possible to be over corrected in the centre as per the stellafane table yet still have TDE. I did start off through the whole polish with short strokes But not much W . So I can try adding more W pattern stroke with the trimmed up lap.
I have an 8 inch to go on to which is down to f7 which I would like to deepen to f4 with a tile tool and 80 grit.
Quote:
Originally Posted by Spacecat
Sunfish - the best strokes to get rid of TDE are very short 1/4 to 1/5 length W stroke with mirror face up , with some randomness thrown in to maintain or head better toward spherical .
Something like a 200mm mirror is much better fit for the hands and more stable , so you are setting yourself a task with a 100mm . The back should be ground flat or slightly concave. If you can see the mirror rock at all while you are polishing tool on top , this can contribute to a TDE .
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