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Originally Posted by A. G. Maisey
Sulphuric acid is even more effective if speed is the criterion. Sulphuric acid will clean a blade in minutes. Aqua regia is even faster.
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yeah, faster ... come back after one hour, and your blade will be completely dissolved in the solution ...
I mean really dissolved without a trace but perhaps a thick yellowish smoke ... as that thing (aqua regia - or king of water) can literally eat away ceramic blocks, dissolve gold and platinum and must be handled with extreme care ...
I myself using lime (jeruk nipis) and coconut water, and some soft steel wire brush