Machining Stainless steel

[Graham Singleton <100421.2123@compuserve.com>]

Message text written by nigelcharles
>I am not convinced that the tailplane tube is stainless. All the earlier
versions will corrode if they are not protect against condensation
(cardboard tubing is useful for this).<

It isn't. My understanding is that stainless is not strong enough. It has
to be 4130 and it's plated. 

Graham