Re: [ATM] Paper tube?

[James P Crombie <jpcrombie@pei.eastlink.ca>]

A 1mm paper tube will likely be very unstable, plus it would be subject 
to degradation from moisture.  But it could be used if reinforced with 
wood veneer or epoxy/glass.  Hobby shops dealing with R/C models sell 
several products in this class,  thin bendable plywood and lightweight 
glass fabric and epoxy finishing systems.  They are available in small 
quantities for a project like yours. 
Ukyo Chen wrote:

>Hi list,
>
>I am working on the tube for the coming 127mm LH system lenses.
>I had thought about to use Aluminium tube but the cost of material and 
>manufacture 1 set is too high, so I turned to paper tube now, not sure if 
>normal industrial paper tube is strong enough for a such aperture like 
>127mm. Existing industrial paper tube can be offered in some diameters like 
>125, 135mm and the thickness should be 1mm. Also they are very cheap, I can 
>easily rebuild one if something failed.
>Thanks for any sugguestion.
>
>Best Regards,
>Ukyo Chen
>
>
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