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<p>[QUOTE=&quot;Publius2, post: 8185133, member: 105571&quot;]Maybe one last post on the use of acetone:&nbsp; I&#039;ve been using it in my home machine shop for over 30 years, primarily as a degreaser for machined steel parts and as a final cleaning treatment for items to be cold-blued, including gun parts and barrels.&nbsp; The latter requires as close to absolute cleanliness as can be achieved outside of a laboratory or industrial setting.&nbsp; To that end, I maintain a gallon can of fresh, unused acetone and a gallon can of &quot;used&quot; acetone.&nbsp; The &quot;used&quot; stuff is for gross degreasing where a film left on the item is either inconsequential or will be removed by final rinsing with fresh acetone.&nbsp; I try to waste as little acetone as possible so all used material is poured into the &quot;used acetone&quot; can through a metal funnel lined with a standard 4&quot; paper cone coffee filter.</p><p><br /></p><p>BTW, I have never found rust in a can of acetone, although I suppose it is possible.[/QUOTE]</p><p><br /></p>

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