From: "Stathis Kafalis" 
To: 
Reply-To: "Stathis Kafalis" 


I believe, that the support points will print through wihle polishing on
such a cell, no mater how many they are. You will have to rotate the mirror
on it very often to prevent this.

It's by far easier to put a soft marerial under it, like the others
suggested already. See my setup for a 14" mirror fof 20,6 mm
(0.81") thickness:
 http://www.geocities.com/dobsonstathis/bilder/14parabolizing_1.jpg (note the
most importand accoustic tool under it, he he)

Stathis Kafalis
http://www.geocities.com/dobsonstathis

> > I'm soon to work on a thin (7/8in) 16in mirror.  I'd considering making
an
> > 18 or 27 point working cell with 6 side-brace points so as to transfer
the
> > working load more evenly to the glass.

--- BBBS/NT v4.00 MP