Message:

<p>[QUOTE=&quot;John Burgess, post: 4798680, member: 105098&quot;]water under the pressure of air is roughly the same thing as sand blasting, or &quot;pressure cleaning&quot; it&#039;s abrasive. </p><p>if you are going to do it, practice a lot on coins of little value with the same material and composition, And I&#039;d suggest using only distilled water so there aren&#039;t any contaminants like minerals in it. Waterpik itself claims it&#039;s less abrasive than brushing or flossing and won&#039;t cause bleeding, but they do not say it&#039;s not abrasive at all, just that it&#039;s less abrasive and won&#039;t cause bleeding, even on people with sensitive gums or gum disease.</p><p><br /></p><p>Water under pressure is still abrasive though or even moving slowly, the common term would be &quot;erosion&quot;.&nbsp; gentle rain won&#039;t hurt you but over time it carves rocks.</p><p><br /></p><p>&nbsp;I expect a waterpik could work, I also expect it could cause damage to the coin, and even so, you never really know what you will uncover until you uncover it, the thing you dislike and want to remove may uncover an even bigger eyesore.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in