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Anyone tried one of these coils? https://www.ebay.com.au/itm/Detech-AUSTRALIA-45-CM-18-Concentric-Coil-NEW-for-Minelab-GPX-GP-SD/193392685791?hash=item2d071a32df:g:1g8AAOSwSthd~-S9 If it works like they claim it should be a good coil.

Hi everyone I'm thinking of buying a welder and am after a bit of info. What brand type etc. Would like a mig but budget might be a problem. Has anyone had any luck with gasless migs. Or maybe I'd be better off with an arc welder to start with. I'm looking to use it at home to build shelves...

Just wondering if it is worth keeping, crushing then panning hot rocks just in case they contain gold or is it a waste of time? Seems a sin not to keep something that gives a good signal.