ATM [Fwd: BOUNCE atm@shore.net: Non-member submission from [srychnov@uci.edu (Scott Rychnovsky)]]

[Mel Bartels <mbartels@efn.org>]

> To: Arthur Lewis Williams <a.l.williams@psilink.co.uk>
> From: srychnov@uci.edu (Scott Rychnovsky)
> Subject: Re: ATM Grinding Machine Questions
> Cc: atm@shore.net
>
> Hi Arthur,
>
> I have made two griding machines.  The first is a Waineo-Elgin design.  You
> can see lots of discussion in the archives
> (http://bbs.wmol.com/hansesc/machine.htm).  The original article is in Sky
> and Telescope, November 1995, p. 81.  A good website is
> http://www.idle.com/~markv/telescopes.shtml.  Go to "a small simple
> grinding machine" in that page.  It has plans.
>
> I made one of these first using these designs to get an 8 RPM table with an
> 18 RPM overarm.  It worked but it was SLOW to polish.  If I had more
> pateince it would have been acceptable, but I wanted to do a larger mirror
> and have it go faster.  So I put together a second grinding machine.  It
> has a 325 RPM motor that is geared down to a 40 RPM table with a 3.8 : 1
> reduction to the overarm.  This one works much faster, but it is also
> noisier and heavier.  If you are patient the light Waineo design works
> fine.
>
> Some of the references I looked at while designing the second machine are
> listed bleow:
>
> December 1975 Sky and Telescope, Page 413.
>
> http://www.enteract.com/~klilja/lilja2.htm  (is this Ken Lowther's machine?)
>
> http://koti.kolumbus.fi/~pulliy/machine.html
>
> Other machines on the web:
>
> http://www.geocities.com/CapeCanaveral/Hangar/2999/ronmach.html
>
> http://bbs.wmol.com/hansesc/machine.htm
>
> Have fun and good luck with your project.
>
> Scott
>
> >I have seen pictures of similar machines but the mechanics are not very
> >clear to me. Could you please tell me where I might find some working
> >drawings if possible for such a machine on the web??
> >I'm very greatful. My location is on the Island of Anglesey, North Wales. u.k.
> >arthur.



--
Clear skies, Mel Bartels
http://www.efn.org/~mbartels