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  1. 2nd November 2021, 07:46 AM #1
    qwertyu
    qwertyu is offline GOLD MEMBER
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    Default Stainless steel sheet for battery terminals

    Ive now bought into a couple of brands of power tools and I want to make some battery adapters so I can use another brands batteries if I forget to charge some. Eg something like this:

    Makita to Bosch Battery Adapter by maxxer - Thingiverse

    It calls for 1mm stainless steel to be used as terminals. It can be purchased on ebay/aliexpress but shipping is a long time away. Any ideas where I can get it for a reasonable price and a bit faster? Happy to salvage it from another product if you have any ideas or suitable replacement...does it HAVE to be stainless?
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  3. 2nd November 2021, 08:21 AM #2
    Wrongwayfirst
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    Standard flashing is .6mm so maybe try local plumber or I see you in melb so robot building or similar that make flashing.
    no idea on why stainless I would have thought copper or brass?
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  4. 2nd November 2021, 08:37 AM #3
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    It needs the 'spring' quality of stainless and not be prone to tarnishing. Try an electrical contractor for some offcuts or a short length of SS band-it strap.
    Those were the droids I was looking for.
    https://autoblastgates.com.au
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  5. 2nd November 2021, 09:16 AM #4
    qwertyu
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    Thanks all.

    You think galvanised steel is ok? I got heaps of this type of stuff
    Abey 25 x 0.8mm x 30m Punched Strapping - Bunnings Australia

    Or maybe these shelves are the correct thickness
    Handy Storage 137 x 71 x 30.5cm Galvanised 4 Shelf Unit - Bunnings Australia

    Looking online, some people are using copper (which I think is even harder to get) or someone used 'zinc piping' which they cut and flattened. I assume zinc piping is just galvanised steel?
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  6. 2nd November 2021, 01:19 PM #5
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    Qwertyu, have you tried a model makers shop? For example:
    https://www.hobbytools.com.au/assets...20210309031015

    SS Sheet.jpg SS Price.jpg
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  7. 2nd November 2021, 01:41 PM #6
    aldav
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    As NCArcher has said it needs to be a spring quality of stainless. Much of the sheet stainless material for sale will not be suitable. You need a ferritic stainless, the main additive is chrome with very little or no nickel.
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  8. 2nd November 2021, 10:59 PM #7
    BobL
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    Interestingly the most common material used as battery terminals are Nickel plated steel, or better still pure nickel strips.

    Stainless steel is a relatively poor conductor of electricity being about 6x worse than straight iron, while Nickel has about a 10x greater conductivity than SS
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  9. 3rd November 2021, 06:52 AM #8
    qwertyu
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    Bobl any ideas about where I could salvage some from?

    Sent from my ONEPLUS A5010 using Tapatalk
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  10. 3rd November 2021, 08:13 AM #9
    BobL
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    Quote Originally Posted by qwertyu View Post
    Bobl any ideas about where I could salvage some from?

    Sent from my ONEPLUS A5010 using Tapatalk
    Old battery packs?

    Stainless is a lot easier to find, eg: clothes drier drums, old BBQs etc, honestly I would use new Ni strips.
    You don't have to wait 6 weeks to get it from china.
    eg NICKEL STRIP STRIPS PLATED & PURE Ni 18650 BATTERY CELL SPOT WELDING STRAP | eBay

    This one says it will deliver free between 9 and 16 Nov. Express post by Nov 8.
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  11. 3rd November 2021, 08:31 AM #10
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    Qwertyu

    I have some stainless, but I am not sure it quite meets the requirements. I measure it at 0.6mm, but it is not spring steel and it is not magnetic. It has a gentle curvature to it, which I don't think would matter as you will be forming it anyway.

    P1070927 (Medium).JPGP1070928 (Medium).JPG

    Size is 450mm x 170mm

    If it is suitable you would be welcome to it for postage cost.

    Regards
    Paul
    Last edited by Bushmiller; 3rd November 2021 at 10:15 AM. Reason: Corrected size
    Bushmiller;

    "Power tends to corrupt. Absolute power corrupts, absolutely!"
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  12. 3rd November 2021, 09:45 AM #11
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    Stainless steel hose clamps. You can buy them just about anywhere. Most will be about 0.7mm thick.
    ​Brad.
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