From: "Russell Jocoy" 
To: jhisson1{at}columbus.rr.com, atm{at}shore.net
Reply-To: "Russell Jocoy" 


>From: Jason Hissong 
>Reply-To: Jason Hissong 
>To: atm{at}shore.net
>Subject: ATM Curvature too deep
>Date: Sun, 15 Jun 2003 00:04:31 -0400
>
>
>Hi guys,
>
>Wow, I just subscribed to the list and 30 emails popped in already :)
>
>I am just starting out at ATM and I am working on a 6" F/8 mirror.  I got
>the initial curved worked out and I went from 80 grit to 120. However, I am
>finding that while I am going center over center alternating Mirror on top
>and tool on top, the curve got deeper.  It is now about F/5 (doh!)  I
>looked at my tool and the edges are pretty much gone (the tiles are worn
>down to the plaster surface).  I am wondering if the tool being worn down
>so much is grinding out the center now that there are not any edges?
>
>Anyways... now to correct it.  I think I need to make a new tool and maybe
>start over with 80 or even 60 grit to flatten it out again (tool on top,
>center over center).
>
>I am sure you guys get this question alot from us newbies..
>
>Thanks for the help!
>
>Jason Hissong
>
>





("atm{at}shore.net")

    Jason,
                     If your outside tiles are worn off you used the wrong
tiles. I made this mistake by using tiles that were too soft. I had to
epoxy harder tiles to the tool. Take a nail to the back of the tile &
see if you can dig a hole. You should'nt be able to do anything but scratch
the back.
                     Don't try to flatten anytyhing at this point. You have
a long way to go. Just work tool
on top and your depth will come up.

  Russ Jocoy
("atm{at}shore.net")

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