ATM [Fwd: BOUNCE atm@shore.net: Non-member submission from [johnson@srsc.org (Jim Johnson)]]

[Mel Bartels <mbartels@efn.org>]

owner-atm@shore.net wrote:

> From: johnson@srsc.org (Jim Johnson)
> Subject: Regrinding Question
>
> I am going to regrind an old 6" f/8 mirror to f/5.  I've purchased a
> convex
> tool from Newport and was planning on starting with #80 Carbo and
> chordal
> strokes.  Is that the best course?  Or should I try to keep the
> "sphere" and
> use a finer grit and different stroke?
>
> This will be the first time I've pushed glass since 1979 and I want
> some
> practice before I tackle a bigger mirror.
>
> Thanks in advance,
>
> Jim Johnson
>
> -----------
> ------------------------------------------------------------------
>   Jim Johnson                               email: johnson@srsc.org
>   Senior Image Processing/GIS Analyst       Voice: (601) 688-2509
>   Space Remote Sensing Center               FAX:   (601) 688-2861
>   Building 1103 Suite 118                   ftp:   wolf.srsc.org
>   Stennis Space Center, MS USA              WWW:   http://www.srsc.org
>
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