Hello Chuck Are you using a heavy-duty soldering iron and continuously "scrubbing-like-hell" the Aluminum surface under the oil with the 'tip' to break-thru the AL-oxidation layer to allow the solder to whet the Al? I continuously feed the solder into the region to build-up a solderable 'blob' which can easily be soldered to later.
73 Dick/w7wkr at CN98pi =============================== Message: 2 Date: Mon, 1 Jun 2020 03:56:38 +0000 From: Chuck Hutton <charle...@msn.com> To: "topband@contesting.com" <topband@contesting.com> Subject: Topband: Soldering aluminum coax shield to copper wire Message-ID: < mwhpr10mb1486b0cd39c2cba1aecd4adffc...@mwhpr10mb1486.namprd10.prod.outlook.com > Content-Type: text/plain; charset="iso-8859-1" Many many years ago I had partial success soldering aluminum coax shield to copper wire using the motor oil technique. I also believe I had some flux (unknown type) that helped. But I had no luck with motor oil last week and can not find the flux I had, which might be a good thing as it is 20 years old. So what is the easy reliable cheap method to get the job done? Chuck _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector