Topband: Solereing to Aluminum

[Dick Bingham]

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
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Message: 2
Date: Mon, 1 Jun 2020 03:56:38 +0000
From: Chuck Hutton <charlesh3 at msn.com>
To: "topband at contesting.com" <topband at contesting.com>
Subject: Topband: Soldering aluminum coax shield to copper wire
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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