[R-390] Alternative to IERC tube shields?

[2002tii]

Tim wrote:

>Perhaps if IERC's are not a available, a better alternative for the
>vast majority of tubes that don't actually need shielding, is no shield.

That is precisely what I have long recommended, but few seem willing to do it.

>While I lack the skill, I think the thermal
>and moral equivalent of an IERC tube could be reproduced by a
>sufficiently enthusiastic hobbyist.     *     *     *
>
>IERC cans appear to be seamless, so they were probably deep drawn?
>Is this likely the same process used to make the deep unseamed metal
>Capacitor cans?

Note that the IERC internals -- the spring-fingered sleeves -- are 
probably the much harder part to make.

Best regards,

Don