Re: [ATM] A question of diameter and thickness

[vorblesnak@peak.org]

1 inch thickness in 6 inches diameter is the classic.  That glass will not
flex, (OK it will but lets not go there), and the support can be simple. 
I have personally done a 12 inch in 3/4 inch thickness and figured an 18
inch in 3/4 inch thickness.  Really, they are not that bad to do.  A more
important consideration is the surface.  The 18 inch had a broad hump on
the back which caused flex and frustrated the first owner.  Also, sticky
mounts play havoc with thin edgy mirrors.

I think 12 inch or 14 inch would be fine in the 7/8 inch stuff.  And 12
inch would be fine in the 3/4 inch stuff.

My two cents worth.

David Davis
Toledo, OR  97391


> I don't want to cut disks that are impossible to deal with for ATM'ers.
>   I would love to have suggestions on maximum diameters for the people who
> want a nice, no, good mirror , for this thin glass, and only the
> experienced
> can give this advice... Jerry gets a big discount on some Pyrex from me...
>     sorry I have rambled on, After 12 days with no electrical power your
> priorities seem to get in line...
>                             I love this list,   RUSS JOCOY
>
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