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    Recent Haul of Tantalum & Mica caps

    Tropical Fish, bottom left I'm unsure about.
    https://flic.kr/p/2a9TyPL
    https://flic.kr/p/2a9TxSL
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    Thanks for that info! Recently came upon some...

    Thanks for that info!
    Recently came upon some vintage resistors, thermistors, for a moment I thought the ones on the right were resistors too! I'll determine which contain the good metals....
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    This thread has a tip for you - You're correct! Scholar :)) Now I've found some...

    You're correct! Scholar :))
    Now I've found some other wires that are also the same. Thank you so much.
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    This thread has a tip for you - Not Zinc, zinc is brittle. Non magnetic so not...

    Not Zinc, zinc is brittle. Non magnetic so not Nickel.
    Doesn't look like Alu, not as malleable, and different oxide coating, where the screws rubbed it is VERY silvery.
    I've no idea what it could...
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    This thread has a tip for you - Also got some strips of what I believe is Zinc....

    Also got some strips of what I believe is Zinc. Pretty happy about that.
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    This thread has a tip for you - Nealry threw this old power switch out

    ~70 years old, so no major silver contacts
    Around WW1 and WW2 time there were economic problems, so silver had a higher value, and shortages, also copper was mostly good enough for the job.
    Looked...
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    This thread has a tip for you - I don't sell my recovery's to scrap yards or...

    I don't sell my recovery's to scrap yards or other dealers.
    My plan is to process all of these things my self.
    I'm not a fulltime scrapper, just scrapped a few bits of junk lying around (my...
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    This thread has a tip for you - Yep, check out my profile picture :) Wanna be...

    Yep, check out my profile picture :)
    Wanna be careful handling them too, be sure to wash your hands - and reduce contact to a minimum.
    Cadmium is a pretty cool element, and I plan to extract it...
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    This thread has a tip for you - Electrical Contacts - Today I Learned

    So they can be coated with silver. And I suspect Tin, though I've not processed my yet to confirm this.

    Looking through my random contacts, some did not melt the way I would expect Tin to, or turn...
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    This thread has a tip for you - Great info. Mine was just a large wall panel...

    Great info.
    Mine was just a large wall panel system not associated with any doors.
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    This thread has a tip for you - Yes, you are correct some Mercury relays looks...

    Yes, you are correct some Mercury relays looks similar to the oblong relay in the first picture - but they are clearly marked as containing Hg.
    And all scrappers should already be well versed in...
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    This thread has a tip for you - A Good and Bad day

    Today I discovered Reed Switches. Realised I'd saved one.
    Thought it was a fuse and only clipped it off to keep the nice long glass tube, it broke, but the tube was mainly intact.
    Hoping to use the...
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    Score, motherload, or otherwise awesome thread. - They are fairly round.

    They are fairly round.
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    They are very easy to open - you pry the top off...

    They are very easy to open - you pry the top off with pliers. While the switch is still mounted on the board, the base will remain there.
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    Gold, keep hunting

    https://c1.staticflickr.com/5/4203/35100712291_90b1f0943c.jpg
    Inside that little switch (just under 10mm square) are two gold balls, probably only electroplated.
    There are two tiny springs aswell,...
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    What I've found so far breaking resistors. Most...

    What I've found so far breaking resistors. Most contain a white ceramic interior.
    But many resistors with flat ends have a darker material inside sometimes with a wire coil.
    This leads me to...
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    Score, motherload, or otherwise awesome thread. - Sneaky Tantalum Capacitors

    Today I was in my rubbish bin, and noticed this little Blue Tantalum hiding inside of some heatshrink!
    It was on the back of a power switch....
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    IMB 21" CRT & a surround sound amplifier

    Interestingly this had a Sony Trinitron Tube inside.
    They were the best you could get. Not surprising, as IBM are high quality guys.

    Lots of Tantalum Capacitors.
    Unfortunatley I had this guy...
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    A few more with some context. A. big old...

    A few more with some context.

    A. big old switch
    B. some kind of relay, two huge contacts, and 3 little balls on other side.

    Rest is from an old washing machine (70's/80's/90's)
    Scrapped a...
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    this thread has pictures - https://c1.staticflickr.com/5/4182/34557869511_c2f...

    https://c1.staticflickr.com/5/4182/34557869511_c2f38ac87c.jpg
    I accidentally broke one of these open, and out poped a yellow/tan MLCC.
    Tried a few more, but they did not contain the same.
    I've a...
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    Don't melt these silver contacts they contain 12%...

    Don't melt these silver contacts they contain 12% Cadmium - it becomes a gas at 650 degrees Celcius. Wheres the melting point of silver is 950ish degrees Celcius.
    Try not to handle them either, and...
  22. Thread: Heat pump

    by TheCreator
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    Hot water heaters can have a long Manganese rod...

    Hot water heaters can have a long Manganese rod inside - it prevents corrosion or something.
    Not sure if they are high value.
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    Sorry, I should have taken some pictures of the...

    Sorry, I should have taken some pictures of the switches before I recovered the contacts, for context.

    I can often bend the copper to prize the contacts free without touching them.
    Sometimes I...
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    This thead is a question - Great info. Thanks.

    Great info. Thanks.
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    This thead is a question - Non magnetic, I don't have an acid test kit...

    Non magnetic, I don't have an acid test kit handy. Will try some other household chemicals to see if there is any reaction.

    I placed it in some Cloudy Ammonia and it began to show orange corrosion.
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