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<p>[QUOTE=&quot;kyratango, post: 851779, member: 5006&quot;]Very useful, Komo! but...</p><p><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie66" alt=":nailbiting:" unselectable="on" unselectable="on" />The image suggest testing directly on the piece by putting an acid drop on it<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie45" alt=":facepalm:" unselectable="on" unselectable="on" /></p><p>DON&#039;T do that!!! Get a WHITE testing stone and leave a trace of metal on it by rubbing an edge of the piece you want to test. Color result will be obvious on the white background<img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" />[/QUOTE]</p><p><br /></p>

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