Where can you find thick copper wire?

I was just wondering if anyone could tell me how to find thick (#10 AWG or less) copper wire?
Either in household electronics or other places where it is free or cheap.
I'm trying to make this Instructable: https://www.instructables.com/id/Build-a-Microwave-Transformer-Homemade-Welder/

Thanks for answering my question!

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rclee1 year ago

now I'm pissed . I went to home depot looking for bare copper wire in the 10-14 gauge range. All they had was 20 gauge. So check beforehand

bethekind (author) 3 years ago
Thanks everyone!
If you click on the blue "Select as Best Answer" button (next to the answer that helped you out the most), it will mark this question as "answered" and put it into that category of the Q & A page. ;-)
Stores like Home Depot and Lowes sell 4ga copper wire by the 25' roll for around $9.00. It's sold as grounding wire. You can also get #6 wire the same way for a bit less $$.
canucksgirl4 years ago
Home Depot in Canada has copper wire by the foot sold in the electrical section. You can get quite a few different gauges of bare or coated wire... I bought a few feet recently for a project (10g I think), and it came to less than $5.00
bethekind (author)  canucksgirl4 years ago
10g for $5 isn't that a ton for copper?
No, I didn't mean it was $5 per foot. I mean that I bought a few feet (I think 5 or 6... can't remember) and the total bill was less than $5.00 (with taxes).

The price per foot will depend on the store (usually by the spool is cheaper than smaller quantities), but 10 gauge solid, bare copper wire is pretty common... Its a typical ground wire, and should be easy enough to find.
Your profile doesn't say where you are in the world to offer constructive advice, but #10 AWG is roughly 6mm^2 which is a pretty easy section to lay in from any electrical store. In the UK, its the kind of section we'd use to wire an electric cooker.

Bear in mind you could parallel two strands of half the thickness and get the same voltage and current rating, if there's room. Often, smaller wire packs in the space available better.

bethekind (author)  steveastrouk4 years ago
I live in Calgary, Canada
Try asking the local electrical wholesaler for some roll-ends.
bethekind (author)  steveastrouk4 years ago
You mean, like liquidation?