Message:

<p>[QUOTE=&quot;BadThad, post: 520247, member: 17261&quot;]First off, the results are quite nice, congrats. I too prefer not to have gunk in the devices.</p><p>&nbsp;</p><p>Mineral oil should be removed with XYLENE. Oil is only slightly soluble in isopropanol. However, oil is completely miscible with xylene. It will remove all traces of the oil and do no harm to the copper surface. Acetone would also be a very poor choice for removing oil, it&#039;s far too polar and oil is practically insoluble in acetone.</p><p>&nbsp;</p><p>Here&#039;s a good, scientific test for those of you that do not understand solubilities. Take a clear glass container (a test tube is best) and mix equal parts of oil and your choice of solvent, and mix well. If two layers form upon standing, it&#039;s not a good choice as a removal solvent.</p><p>&nbsp;</p><p>I should also add that pure mineral oil is completely non-reactive with copper. However, only it&#039;s of extremely high grade. Most oils will contain other dissolved substances that could have non-polar characteristics. These could react and bond to the surface. While it may not be apparent in the short-term, there is a chance that over time, these impurities could alter the surface of the coin. This is the reason I do not recommend storing coins in mineral oil.[/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