Re: ATM tube design

["Albert Highe" <ahighe@ix.netcom.com>]

Tom,

I'm not sure if you meant my site, but I've made a few scopes using aluminum
channel. My 6" f/6 uses two parallel channels.

http://pw2.netcom.com/~ahighe/astroequ.html

Albert


----- Original Message -----
From: Thomas Janstrom <tomjan@ozemail.com.au>
To: <Lmcngc@aol.com>
Cc: atm <atm@shore.net>
Sent: Saturday, September 02, 2000 4:07 AM
Subject: Re: ATM tube design


>
> I would, suggest for ease of access to materials, use PVC pipe, but if you
> want something more exotic try two lengths of Al channel to form a two
> component truss like design. See bad ascii art.
>
>
>                         |------------|
>                         |                  |
>                         [-----0-----] this is the channel
>                         |                  |
>                         |------------|
> This is the view from above.
>
>                         |-----0-----| secondary cage assy
>                         |                 |
>                         |                 |
>                         =               = the channel goes from top of
> mirror box to sec assy.
>                         |                 |
>                         |                 |
>                         |----------- | top of mirror box
> from the side.
>
> Now I know someone has done this, I saw it on their site, could they
please
> provide the link to clarify things.
>
> Clear skies, Thomas
> http://www.geocities.com/t_janstrom/
>
>
> ----- Original Message -----
> From: <Lmcngc@aol.com>
> To: <atm@shore.net>
> Sent: Saturday, September 02, 2000 4:59 PM
> Subject: ATM tube design
>
>
> >
> >
> >  Hi All
> >            Does anyone have opinions on a tube design for small scopes,
8"
> and
> >            under that does'nt use some form of concrete forming tube as
> where
> >            I live builders use a different way of forming pillars. They
do
> > make it in Oz
> >            but it's made on the other side of the country and the friegh
t
> is
> > ridiculous
> >            not because of weight but size (only comes in min length of 4
> > metres).
> >           Truss tube design the way I picture it is only for larger
> designs.
> >
> >           Many thanks to your replys
> >                                                    Rob Lockyer
> >
> >
>
>