[DanBC]

Just out of interest:

1) Why, exactly, should this not be on HN?

2) What makes a submission suitable to be on HN?

You've said that you found it interesting. You maybe learned something? Your curiosity isn't piqued - do we still use this process, does anyone anywhere in the world use this process, could it be used for anything, what happens if you use other materials or if the air is hotter or colder, or if we try it on the moon or on Mars or etc etc etc?

[jaunkst]

Why not Hn. It is an elegant solution to a manufacturing problem, im sure many of you ask how it can be done more effectively requiring less space and material.