Re: [ATM] Some pictures of the 16' and tools

[vorblesnak@peak.org]

That backer tool is actually a ceramic mirror blank.  It is 21 inches,
more or less, being very irregular at the edge.  I ground it to an F4
curve and normally it would be glazed and the glaze would be polished and
figured.  I decided to try a different approach so I am fusing a piece of
1/8th inch thick pyrex to the front.  That will happen in a week or so. 
The curve was very close to the curve on the 16, so I pressed it into
service as a backer while I try and figure the thin glass.

The funny looking hexagonal thingies are holes.  The ceramic has an
average thickness of 3/4 inch, but the honey comb back allows a 2 inch
thickness overall.  Stiffens it up.  Mark Yonkers did the design work.  I
think he studied Palomar quite a bit while he was doing it.

I have used alot of things for pad, but never I/O carpet.  The towel seems
to work well and protects the ceramic from spills.

David Davis
Toledo, OR

> What are those funny-looking hexagonal thingies in teh
> support back? Had you thought about using
> indoor-outdoor carpet for padding, instead of a towel?
> Guy
> --- vorblesnak@peak.org wrote:


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