Return-Path: Received: from mtiwmhc12.worldnet.att.net ([204.127.131.116] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2934319 for flyrotary@lancaironline.net; Fri, 16 Jan 2004 00:34:08 -0500 Received: from unknown (157.birmingham-01-03rs.al.dial-access.att.net[12.74.162.157]) by worldnet.att.net (mtiwmhc12) with SMTP id <2004011605340111200pm5iue>; Fri, 16 Jan 2004 05:34:02 +0000 Message-ID: <005d01c3dbf2$5e0106c0$9da24a0c@unknown> From: "Michael D. Callahan" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Alu welder Date: Thu, 15 Jan 2004 23:34:08 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005A_01C3DBC0.12A4CD60" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_005A_01C3DBC0.12A4CD60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable TIG is the way to go for aluminum. You have to have a spool gun to run = aluminum though a MIG without it binding up. You can O/A sheet metal, = but you HAVE to get to the back side to wash the flux off or it'll eat = itself... extremely corrosive. Get a nice TIG and you'll find it useful on a lot more than just = aluminum. Works great on aluminum, stainless, 4130, titanium, copper... = All you need is gas and a proper rod, similar to O/A in that respect. = TIG is very versatile. You have to change wire and gasses to use MIG on = various materials. The MIG may appear cheaper at the outset, but once = you buy four different rolls of wire and four different bottles of gas = (at $50 a bottle), the TIG machine is not so bad. It is also VERY easy for a beginnner to get an absolutely beautiful = weld with a MIG... a beautiful weld that grabbed nothing! I have seen = many great looking MIG welds fail. It takes a skilled welder to make a = good MIG weld, no matter how easy it looks. TIG is very similar in = practice to OA welding... if you have a feel for one, the other is = pretty intuitive. The only trick to switching between OA and TIG is to = get used to using the pedal vs backing out and vice-versa for heat = control. Back out on TIG in an attempt to reduce the heat and it just = spreads the heat zone. Once you get that, it's a breeze. We have Tig, = stick and OA at the museum. That is also my order of preference for a = welding job. I use the stick for heavy work and OA as a last resort, = mainly brazing work. Mike C. ----- Original Message -----=20 From: Finn Lassen=20 To: Rotary motors in aircraft=20 Sent: Thursday, January 15, 2004 9:27 PM Subject: [FlyRotary] Alu welder With some alu welding coming up (radiators, intake manifold, engine = mount plate) I'm considering purchase of a welder. What would you recomend? TIG, MIG, cost? Finn ------=_NextPart_000_005A_01C3DBC0.12A4CD60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
TIG is the way to go for aluminum. You have to have = a spool=20 gun to run aluminum though a MIG without it binding up. You can O/A = sheet metal,=20 but you HAVE to get to the back side to wash the flux off or it'll = eat=20 itself... extremely corrosive.
    Get a nice TIG and you'll find it = useful on=20 a lot more than just aluminum. Works great on aluminum, stainless, = 4130,=20 titanium, copper... All you need is gas and a proper rod, similar = to O/A in=20 that respect. TIG is very versatile. You have to change wire and = gasses to=20 use MIG on various materials. The MIG may appear cheaper at the outset, = but once=20 you buy four different rolls of wire and four different bottles of gas = (at $50 a=20 bottle), the TIG machine is not so bad.
    It is also VERY easy for a = beginnner to get=20 an absolutely beautiful weld with a MIG... a beautiful weld that grabbed = nothing! I have seen many great looking MIG welds = fail. It takes=20 a skilled welder to make a good MIG weld, no matter how easy it = looks. TIG=20 is very similar in practice to OA welding... if you have a feel for one, = the=20 other is pretty intuitive. The only trick to switching between OA = and TIG=20 is to get used to using the pedal vs backing out and vice-versa for heat = control. Back out on TIG in an attempt to reduce the heat and = it just=20 spreads the heat zone. Once you get that, it's a breeze. We have = Tig, stick=20 and OA at the museum. That is also my order of preference for a welding = job. I=20 use the stick for heavy work and OA as a last resort, mainly brazing = work. Mike=20 C.
----- Original Message -----
From:=20 Finn=20 Lassen
Sent: Thursday, January 15, = 2004 9:27=20 PM
Subject: [FlyRotary] Alu = welder

With some alu welding coming up = (radiators, intake=20 manifold, engine mount plate) I'm considering purchase of a =20 welder.

What would you recomend? TIG, MIG,=20 cost?

Finn
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