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<p>[QUOTE=&quot;bruthajoe, post: 8085954, member: 108656&quot;]I&#039;ve never heard of using acetone for prepping copper joints. I can&#039;t imagine why anyone would want to. The goal for joining copper pipes is to remove any oxidation from the surfaces to ensure a good flow and consistent bond of the solder. This is done by mechanically stripping the copper surfaces to be joined with an abrasive and then applying Flux, being the trade favorite, for the final prepping of the surfaces and serves two purposes, 1 is to immediately inhibit oxidation and chemically etch the surfaces and 2 is to create a liquid tension to the molten solder. Pro tip... always preheat your pipes a bit before joining to avoid a positive pressure build up inside the pipes, while sweating, which will resist the flow of solder into the joint, especially on inline and or final connections.[/QUOTE]</p><p><br /></p>

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