From: "Russell Jocoy" 
To: ray{at}stabilite.com, atm{at}shore.net
Reply-To: "Russell Jocoy" 






>From: ray{at}stabilite.com (Ray Desmarais)
>Reply-To: ray{at}stabilite.com (Ray Desmarais)
>To: atm{at}shore.net
>Subject: ATM Too big, too thin
>Date: Wed, 26 Feb 2003 13:21:59 -0600 (CST)
>
>
>
>Hi All,
>
>Just wanted to make a few comments.
>I have found that the most important things are.
>Good support under mirror.
>I have had good success with packaging peanuts in a large plastic bag
>fashioned into a circle.
>It's a little larger than the mirror.
>The mirror needs to be pushed back and forth until it settles.
>Next you need a lightweight tool to grind and polish.
>The last thing you need is to flex the mirror while working it.
>The less weight the better. I have used furring strips with masonite back.
>I put the rough curve in the mold and filled it with expanding foam.
>Next I put a masonite front on it and sealed it with clear coat.
>The grinding tiles are pitched to the surface.
>For polishing I poured small pitch blocks and put them on the surface of
>the
>tool.
>Testing is a problem; the mirror folds in a conventional stand. I made a
>tilting table and I do not go all the way horizontal.
>Which means that I usually am testing 10 feet off the ground.
>I would use a meniscus blank to get the maximum thickness.
>
>I have successfully made a 36" flat .9" thick, and a 72"
mirror .9 " thick.
>That's right it's less than an inch thick.
>I'll try to answer any questions the list has, Unless I perish in flames.
>There is a link with pics of my shop and the scope at
>
>www.oseti.org
>
>Then select
>
>all sky
>
>Enjoy
>
>RAY
>Ray Desmarais
>479-890-4918
>ray{at}stabilite.com
>
>Education is not something that can be completed.
>It's a way of life.
>
>
("atm{at}shore.net")

  I think you printed a 72" mirror with a .9 thickness.... >9 thickness of
what?... an inch????
Please tell me it is not true!!!!!!     This is bull unless  you have a new
source of glass combined
with a carbon substrate that can support glass in a thin layer ...  BULL...
              RUSS
("atm{at}shore.net")

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