Return-Path: <13brv3@bellsouth.net> Received: from imf19aec.mail.bellsouth.net ([205.152.59.67] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2921192 for flyrotary@lancaironline.net; Wed, 07 Jan 2004 10:30:48 -0500 Received: from rad ([68.155.99.73]) by imf19aec.mail.bellsouth.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20040107153048.IPYS1950.imf19aec.mail.bellsouth.net@rad> for ; Wed, 7 Jan 2004 10:30:48 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Cooling parts during welding (was: aluminum hose bungs ...) Date: Wed, 7 Jan 2004 09:30:49 -0600 Message-ID: <000001c3d533$3b1d2500$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C3D500.F082B500" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C3D500.F082B500 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit There is a heat conductive paste available, at welding shops, and gunsmith supply houses like Brownell's, that is made especially for this task. It will let you weld longer than the wet rags will allow. Most emphatically, I would not weld anything "pressure critical" with water in the tubes. To protect the joints between tube and fin, the paste can even be worked into the fins, and then washed out with hot water later (some will run out from the heat of welding). Regards, Dale R. Thanks Dale. That sounds like just the ticket. In a quick search, it appears that this stuff is used for plumbing work, so maybe I can even find it at Lowe's. Thanks, Rusty ------=_NextPart_000_0001_01C3D500.F082B500 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

   There is a heat conductive paste = available, at=20 welding shops, and gunsmith supply houses like Brownell's, that = is
made=20 especially for this task.  It will let you weld longer than the wet = rags=20 will allow.

   Most emphatically, I would not weld = anything=20 "pressure critical" with water in the tubes.  To protect the joints = between=20 tube and fin, the paste can even be worked into the fins, and then = washed out=20 with hot water later (some will run out from the heat of=20 welding).

Regards,
Dale R.

Thanks = Dale.  That=20 sounds like just the ticket.  In a quick search, it appears that = this stuff=20 is used for plumbing work, so maybe I can even find it at=20 Lowe's.

Thanks,
Rusty
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