[modeleng] Re: Free Cutting Steel

Tony

The reason for my comments are as follows.  Some years ago I attempted =
to
braze some crossheads together, after ten pairs had failed I realised =
the
material contained lead.  The same thing hapenend more recently when I
attempted to braze some hornblocks together.  When completed the brazed
joint looks okay but does not have much mechanical strength and soon =
fall
apart.
Don't know why this is but would like to find out.
So frustrating is this problem that I now when come across material that
will take silver solder that I mark it 'Braze friendly or BF'

Regards IP



"Life should NOT be a journey to the grave with the intention of =
arriving
safely in an attractive and well preserved body, but rather to skid in
sideways, Champagne in one hand - strawberries in the other,=20
body thoroughly used up, totally worn out and screaming WOO HOO - What a
Ride!"=20
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"Never drive faster than your gaurdian angel can fly"
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Priest & Sons Model Engineers
http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm


-----Original Message-----
From: modeleng-bounce@xxxxxxxxxxxxx =
[mailto:modeleng-bounce@xxxxxxxxxxxxx]
On Behalf Of Tony Wells
Sent: 29 October 2005 22:06
To: modeleng@xxxxxxxxxxxxx
Subject: [modeleng] Re: Free Cutting Steel


An interesting comment IP! Lead is in ordinary solder and silver is =
often=20
found in lead ore (with lead being a by product of the silver refining), =
so=20
I would have thought that silver soldering material with traces of lead=20
would not present any problems. I also thought that free machining EN1A=20
steel only contained minute traces of lead, "just enough" as it were, =
but=20
would these be enough to cause it all not to work please? My reason for=20
asking these questions is that I was going to silver solder some t/c =
tips on

to free machining steel tools, for my wood turning.

Tony.


----- Original Message -----=20
From: "Pendragon" <idpriest@xxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Saturday, October 29, 2005 9:49 PM
Subject: [modeleng] Re: Free Cutting Steel


> Gents,
>
> Material with lead in it cannot be silver soldered, not easily anyway, =

> =3D don't know if its possible to weld though.
>
> Regards IP


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