Re: [ATM] Strip planked telescope tube

["tony gondola" <acgna@comcast.net>]

I've designed and built boats using that technique and it works well. It 
would also work for a telescope tube if weight isn't much of a factor. If it 
is then use high density foam or balsa rather then plywood. The biggest 
problem will be getting the glass on the inside surface. To make it easier 
you could make an octagonal tube and glass the inside surfaces of the panels 
before assembly.

Tony

----- Original Message ----- 
From: "Rod Brackenridge" <rjbr@lycos.com>
To: <atm@atmlist.net>
Sent: Thursday, June 15, 2006 3:21 AM
Subject: [ATM] Strip planked telescope tube


>I was thinking about tube ideas for a 14 inch cassegrain and came across an 
>S&T article from November 1991.  I also saw a couple references to the idea 
>by Kurt Maurer in the archives.  The process inolves building a form from 
>strips of wood (usually cedar) and then applying fibreglass cloth and epoxy 
>to the inside and outside, creating a composite tube. I understand the 
>strip plank approach is commonly used to build boats.
>
> For my purposes I am looking for something reasonably light and that is 
> thermally stable enough for visual observation at moderate to high 
> magnification.  For me cost is also a factor.  I haven't checked the price 
> of cedar yet but I do have a saw table so can rip my own strips.
>
> I would be interested in hearing about what others see as the pros and 
> cons of this approach to building a tube.
>
> Thanks,
>
> Rod Brackenridge.
>
> -- 
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