Tubular Micrometer Co. Micrometer

george wilson said:
Your 1" mike does have a solid frame,but the larger ones that Tumico made were hollow. Plus,yours is a later mike,so I'm not sure what they were doing by then. If you want to protedt the faces of the mike,close it on a piece of oiled cloth lightly. DO NOT use a piece of wool as wool will attack steel. I'd not use wool even if your mike has carbide faces,as the wool might attack the steel just behind the faces.

I got a Civil War pistol that was kept for years (before I got it)in a coarsely woven wool sock. It got so corroded that you could see the FULL weaving(or knitted) pattern of the sock in the metal.
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Wow that's pretty amazing. Good to know too hopefully I remember that. This mic has lightly surface rust on the anvil. And I have to adjust the barrel as it doesn't read on zero.


Regards-Carlo
 
George, I find that it's curious on the thing about wool and steel. Aren't some of the old tool boxes lined with wool felt? I also once tuned pianos for a living. The dampers are made of wool and press against the steel strings most of the time. I never saw rust areas specific to that area. In fact, just the opposite. The strings could be rusty, but where the dampers touching was shiny metal. There has to be another factor involved. However, until I know more, I will keep wool away from my mics. Thanks Mark
 
Yes,many old tool boxes were lined with wool felt. Not the best thing to do. I am not sure what causes the rust. It might be lanolin,which might be found in more or less quantity in different wool cloths.

Years ago,I made a leather covered box with brass head tacks on it. The stupid shoe maker advised me to use a product that turned out to be loaded with lanolin on it. The next day,the brass head tacks were furry with green all around the edges. I should have shellacked or sprayed it with lacquer like I always had before. Turns out everything this shoe maker has EVER told me has been completely wrong. And,he acts like such a smart guy. He was new at the time,and fooled me.
 
George, as far as I know the lanolin has been processed out before being made into piano felt. How ever lanolin is a type of wax and is not water soluble. I suspect since felt can absorb moisture quite well and hold it is the problem. If there is good air circulation, then maybe felt should be okay, at least on pianos. Unless someone knows more that's the best explanation that I can come up with. Mark
 
I would think the constant movement/ vibration would be enough on any surface to polish something.


Regards-Carlo
 
Lanolin is a oil use in wax. It is a very good oil for brass. However leather & brass don't get along. That is why nickel plated 38 case came about.

Wool as a good polishing media & as far as I know lanolin is a very good oil for steel also.
 
The leather had nothing to do with the green fuzz. Didn't happen till I put on the lanolin based crud. Then,overnight,green fuzz!!

I would agree that over much time,the leather could attack the brass. But this was a FAST reaction to the brass.
 
What about the wool felt used as wicking? Doesn't seem like manufacturers would have used wool for this if it reacted negatively with steel and iron.
 
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