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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: 7,177
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: 11,500
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, Pro-Find-25, patience, lot's of patience.

1 user likes this post: ktmman

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