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<p>[QUOTE=&quot;CommemHalfScrub, post: 5245303, member: 111545&quot;]Use gloves and also have some acid neutralizer available. You can purchase a bottle for cheap or make your own with baking soda and water. Do not leave the bottles open for long periods of time as it is bad to inhale. </p><p><br /></p><p>other tips:</p><p><br /></p><p>Different stones are available. Some are more coarse than others. I like this because it allows you to get below platings that can be thick and deceiving. It does also take off more metal which leaves more of a mark, so some prefer softer stones if they are going to be reselling the items instead of melting them. </p><p><br /></p><p>I would suggest using 14k acid to test 10k. We do it at our shop because 10k is often too weak to eat through gold filled items, leading to a false positive. The 10k should fade slightly with 14k acid but not disappear. </p><p><br /></p><p>Use 22k acid to clean the stone. cover the entire stone and leave it for several minutes. Then rinse it and cover it in 10k and repeat. The 10k neutralizes the 22k acid to prevent it from messing up future tests.[/QUOTE]</p><p><br /></p>

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