Truly thnx bro... there was a more modest conversation at site re: 
taking a photograph of the absence of stone.

>     So whatever outside the lines there is on the hole is nothing much
>     to worry about.
>
> Thirty spokes share the wheel's hub;
> It is the center hole that makes it useful.
> Shape clay into a vessel;
> It is the space within that makes it useful.
> Cut doors and windows for a room;
> It is the holes which make it useful.
>   
> yrs  christopher

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