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From: Ballarat, VIC
Joined: 15 April 2015
Posts: 550
18 July 2016 12:03 am

I really enjoy this guys vids, he gets such good results with his cleaning methods. Have a watch...

Last edited by ColinD (18 July 2016 12:04 am)

Minelab GPX 4500, Nokta Fors Gold


From: Mount Gambier
Joined: 07 November 2013
Posts: 7,387
18 July 2016 12:35 am

Better get myself some sawdust and paraffin. The second cleaning of the silver/copper coin was of particular use over just citric acid, and the copper coin conservation was also interesting. Thanks for putting that up Colin. smile

Prospecting gear: Used - Whites GM3, GM2, GMT, ML XT17000, ML X-Terra 305, Garrett Gold Stinger, Tesoro Vaquero, Nokta RS pinpointer, Minelab Explorer SE Pro/Etrac, Ace 250
Current - XP Deus, Makro Racer 2, Fisher F75, Tesoro Tejon, Teknetics G2, Whites SPP, Garrett Infinium, Minelab Go-Find 60, XP MI-6, Minelab Profind, Whites Bullseye TRX, Deteknix X-pointer, Garrett AT Pointer


From: Sydney, NSW
Joined: 29 April 2013
Posts: 11,877
23 July 2016 02:22 pm

The acid foil reaction works very well, just tried it this morning on some coins and rings that I couldn't clean any other way. I just substituded the tartaric acid to citric acid and it worked well. Most of the coins were already toasted from being in the ocean but a small silver ring that was not already pitted came up a real treat.

The reaction is quite exothermic almost hot enough to burn so be careful, quite a lot of rotten egg (hydrogen sulphide) gas is expelled during the reaction too and it almost dissolves the foil used.


Minelab GPX 5000, SDC2300, CTX3030, Equinox 800, patience, lot's of patience.

1 user likes this post: ktmman

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