View single post by Robert
 Posted: Thu Jan 11th, 2018 17:14
Robert



Joined: Sun Apr 1st, 2012
Location: South Lakeland, UK
Posts: 4066
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Please can anybody suggest a source for small quantities of copper foil, about 0.15mm thick (or thin!) this equates to 0.005 of an inch (five thou) or 36 Imperial wire gauge.

I don't need much, an A5 sheet would probably last me for years!

I have searched and searched but it needs to be a UK supplier who is happy to supply small quantities. Possibly some specialised craft or model shop?

It's for the tag connections, the tags provided on the ends of the cells aren't long enough nor in the right places radially at the battery ends. Soldering wire connections of sufficient capacity is bulky in the tight confines of the battery housing, there isn't room. The tags are nickel plated steel and are 0.15mm thick by 5mm wide. I don't want to go much thicker to retain flexibility for assembly.

Copper will have less electrical resistance than nickel plated steel and be more ductile and flexible. It's also easier to work, can be cut with sharp scissors, craft knife, etc, and very easy to solder. I did consider brass but it's not so flexible and it cracks when repeatedly bent.



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Robert.