[modeleng] Re: Replacable Tips now silver solder
- From: "Ron Head" <ron.head@xxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Tue, 18 Oct 2005 23:50:36 +0100
Hi Clif
I heard another horror story yesterday. If you follow Doug Hewson's
articles in EIM, you will read that he has had to scrap a boiler due to
cracking of the silver solder. I met Doug at the Midlands exhibition
yesterday and he told me that the solder was sold to him as Easyflo, but it
was actually an equivalent supplied by a well known advertiser who also
attends most of the shows. The suspicion is that the silver content is
reclaimed and contains impurities that affect the properties, i.e. causing
embrittlement. Doug says he knows several other people who have had similar
trouble.
I asked Doug if he quenches his boilers and he says yes (gently with a fine
spray from a hose), but hasn't had this problem of cracking before. The
solder takes on a distinct greyish colour when pickled, instead of the
expected bright colour.
There would seem to be two lessons here:
1) Don't quench boilers.
2) Only buy the best i.e. Johnson Matthey for use on boilers.
The show, by the way, was brilliant - much better than Donington IMHO.
Regards
Ron
----- Original Message -----
From: "Clif Walker" <clif.gwr@xxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Tuesday, October 18, 2005 9:41 AM
Subject: [modeleng] Replacable Tips
> ......Now the box of tips that I was using were purchased at the Harrogate
> show from a tool stand that were selling 12 tool tips in Sandvik boxes,
> cheap.
> After the second broken tip, I put onto the tool a tip that I know is a
> real Sandvik and everything was perfect.
>
> So now the moral of this story is beware of Show Bargains as the actual
> tips in the box judging from the first ones perfomance are definitely not
> Sandvik.
>
>
> Regards
>
> Clif
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