[UK-CONTEST] OT: Aluminium welding

[Nubsey G0VDZ]

The thing with ali welding is to remember that cleanliness is next to 
godliness
 Ali oxide melts at about 3000 deg c
 Ali melts at about 400 deg c.
 You must make sure that what you are welding is very well cleaned.
 Othr wise you get the sudden blob falling away and leaving a big hole where 
the metal inside has melted over a large area. But the outside is still 
intact. When the outside melts disaster.
 Nubsey G0VDZ
----- Original Message ----- 
From: "John Lemay" <john at carltonhouse.eclipse.co.uk>
To: <uk-contest at contesting.com>
Sent: Thursday, July 14, 2011 1:02 PM
Subject: [UK-CONTEST] OT: Aluminium welding


> Hi all
>
> I've noticed on eBay a large number of kits available which apparently
> enable anyone with a hobby blow-torch to weld aluminium. Reading into it,
> it's actually brazing aluminium, because the parent metal is not melted.
> Nevertheless it looks interesting for making and repairing aerials or 
> masts
> for example.
>
> One trade name is Durafix Easyweld.
>
> Has anyone used this with success, or is it too good to be true ?
>
> I'm cynical because I've seen real ally welding and it's a skilled job,
> almost an art.
>
> Regards
>
>
> John G4ZTR
>
>
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