[UK-CONTEST] OT: Aluminium welding

[Stewart Bryant]

On 14/07/2011 13:02, John Lemay wrote:
> 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

John,

My understanding is that this is a eutectic process.

I have seen the demonstrations at the model shows, and I have seen
the results of friends in my model flying club who have used this
on components (repairing engines and making exhausts). The
model flying components are subject to heat and vibration and do not 
seem to fail, and the demonstrations a the shows seem to produce a tough 
joint.

Stewart/G3YSX