[R-390] How to clean up tube shields?

[blw]

> I've used Brasso to clean up shields to a mirror polish.  But wear gloves!
> 
> 73 de Bill, AB6MT
> billsmith@ispwest.com
> 
> 
>> I have two types of tube shields in several of
>> the radios I'm rehabing.  One type is aluminum and
>> cleans up fine with aluminum polish.  The other
>> type are badly corroded and don't respond to aluminum
>> polish or anything else I've tried.  What's the magic
>> chemical and what are they made out of?
>> 
>> Thanks,
>> Michael



I don't know if a few of these tube shields are aluminum or not. They
probably are. They came with the receiver. I was trying a few things to see
how well they work and Twinkle for brass and copper got the shields very
shiny. I think I have some extra IERC shields to fit over those tubes when
all is finished.

By the way, I think I may have mentioned a friend who had a McIntosh amp and
tuner sitting in his shed. I called him last night and asked about it. I
haven't heard from him in a few years. His brother gave it to him and he is
calling this week to ask if he can give it all to me. I don't know model
numbers, but I know he has spare tubes and all manuals and brochures with
it. I'm hoping to have both units on the bench before the weekend.

This is getting crazy around here. First, a Fisher 800b was given to me and
now I may be getting a McIntosh amp and tuner.


Barry