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


>From: "Bob May" 
>Reply-To: "Bob May" 
>To: "atmlist" 
>Subject: Re: ATM Can I parabolise ToT
>Date: Sun, 29 Jun 2003 12:37:38 -0700
>
>The TOT method is more of the variety of doing chordal strokes to wear down
>the outside of the surface, doing the opposite of what is normally done.
>You can also do subdiameter laps and do a bit on the center and a bit on
>the
>edge and get all of the way there by that method.
>The professionals do subdiameter laps and selective polishing of areas to
>bring their huge mirrors into shape.  Please note tho that they do have a
>bit of dogbuscuit from such operations as the laps don't exactly polish
>just
>the high spots.  You can see this in the final results where the shape has
>all kinds of little burbles and spots in it.
>Bob May
>http://nav.to/bobmay
>bobmay{at}nethere.com
>NEW! http://bobmay.astronomy.net
>
>
>

("atm{at}shore.net")

        Bob,

      Is it safe to parobolize a thin mirror on top of the tool? Why take
the chance of flexing the glass?
Yes the smaller tool is the way to go with the TOT, but the full pitch  lap
can be used to iron out
any zoney areas..   no?           Russ Jocoy
("atm{at}shore.net")

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