Re: ATM 10" help - TDE?

["Tyrone Steele" <atm@pivotmusic.com>]

Well, last I just picked back up on this mirror recently, after 9 months of
taking a vacation from it. It seems to me I endevoured about 15 hours
polishing, 5 or 6 of which was just trying to get that edge to polish out.
Some photos were out, some inside the ROC, some right at the ROC.
I did swap between TOT and MOT the whole time.
The entire mirror is polished out except for that edge which just won't come
out. That's why I put it down way back when, and waited 9 months. I was just
frustrated with it.
I will try te Tool-On-Top only with 1/3 W strokes, as everyone is
suggesting.
It probably was air currents. It was a hot day and there is no AC in that
room. Needed a fan.
Thanks for the help.




----- Original Message -----
From: "John D. Upton" <jd-upton@texas.net>
To: "Tyrone Steele" <atm@pivotmusic.com>
Cc: "ATM List" <atm@shore.net>
Sent: Wednesday, September 25, 2002 11:41 AM
Subject: Re: ATM 10" help - TDE?


> Tyrone,
>
> At 08:20 AM 9/25/2002 -0500, Tyrone Steele wrote:
> >Is this TDE or TUE?
> ...snip...
> >I noticed the edges, while polishing, will not come clear by about 1" all
> >around it.
>
>      Assuming the mirror were polished, if the photos were taken outside
> the ROC, then this is turned down / rolled edge.  If they were taken
closer
> to the mirror, then they are turned up edge.
>
>      How much time do you have in polishing already?  Have you been
> swapping Tool-On-Top and Mirror-On-Top every wet or two?  You need to get
> the edge polished out before you can call it a true TDE.  Until the mirror
> is polished, it is just a lagging edge polish.
>
> >What is the best way to fix this problem?
>
>      If you are not yet polished out, just try Tool-On-Top only with 1/3 W
> strokes for a long while to see if it starts to respond.  The edge is
> lagging behind the center and may just need more action.
>
> >For the ROC = 0 photos (no lines) are those imperfections there?
>
>      That is either dog biscuit or air turbulence.  While you are
polishing
> the mirror, don't worry about it.  Once the mirror is fully polished and
> ready to start figuring, then you can adjust your technique so that the
> surface is smoother.  Watch for air currents in the room while testing
also.
>
> Sincerely,
>
> John D. Upton
> Georgetown, TX
> <http://www.atm-workshop.com/>      "The ATM's Workshop Page"
> <http://hometown.aol.com/RonWin20/>  "Ronchi For Windows Software Page"