[LINK] Anticipated service life of fibre

[Karl Auer]

On Tue, 2016-04-05 at 22:10 +1000, Paul Brooks wrote:
> this 'old glass flows/deforms and gets thicker at the
> bottom' is an urban myth that has been debunked. The glass doesn't 
> flow, the thickness gradient is a byproduct of the pouring process, 
> and panes have been found that were installed
> upside-down, with the thicker part still at the top.

I did not know that. Thank you.

I did know about the cylinder and disk production methods, but never
put two and two together properly.

Regards, K.

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Karl Auer (kauer at biplane.com.au)
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