Re: [ATM] fishing for a lil polishing advice!

["Anthony Anconetani" <Anthony.Anconetani@genband.com>]

Good morning guys,

I just want to say thanks for your input. More questions coming soon.

-Anthony

> -----Original Message-----
> From: atm-bounces@atmlist.net 
> [mailto:atm-bounces@atmlist.net] On Behalf Of Jim Burrows
> Sent: Monday, May 21, 2007 6:29 PM
> To: atm@atmlist.net
> Subject: Re: [ATM] fishing for a lil polishing advice!
> 
> At 2007-05-21 14:47 -0500, Mike Lockwood wrote:
> 
> >I like the idea of getting acquainted with testing as early as 
> >possible, so long as the results are only used to correct 
> significant 
> >flaws in polishing technique, and the beginner mirror makier is not 
> >trying (pointlessly) to figure an unpolished mirror.
> 
> I'd second Mike that it's a good idea to test mirrors during 
> early polishing, but not to try to "fix" things.  Just do a 
> quicky Foucault test with a few zones, see what the surface 
> deviations are from a parabola, then a spell with a fixed 
> stroke (maybe one of the many, many suggestions), then test 
> again to see what happened and put notes in a "pre-figuring" 
> log.  By the time the mirror is completely polished, you'll 
> be a figuring expert with tools really ready to fix things.  
> The trouble is there's so many variables (pitch softness, 
> channeling, temperature, hand size <g>, default pressure, 
> etc., etc.) that your situation is almost unique, then it 
> gets really unique when the Strehl ratio gets up to ~ 0.7.
> 
>          -- Jim Burrows
>          -- http://home.earthlink.net/~burrjaw
>          -- mailto:burrjaw@earthlink.net
>          -- Seattle N47.4723 W122.3662 (WGS84)
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 
_______________________________________________
ATM mailing list http://www.atmlist.net/