[SEL] Silver Soldering Failure

[peter ogborne]

Too hot!!!
----- Original Message ----- 
From: "Luke Tonneberger" <flywheelin at hotmail.com>
To: <sel at lists.stationary-engine.com>
Sent: Tuesday, April 19, 2005 12:00 AM
Subject: [SEL] Silver Soldering Failure


> Hi Everybody,
>
> Well, I tried my hand at silver soldering Saturday and didn't have any 
> success. I tried for about 4 hours and just couldn't get it.  I practiced 
> on a piece of steel. Got it red hot and touched the silver solder to it. 
> It melted and made a nice little blob. After it cooled I smacked and 
> whacked on it and it wouldn't bust loose. I thought hey that's pretty easy 
> so I tried it on my crankshaft.  Put my flux on and heated it with my 
> oxy/acetylene torch with a brazing tip in it.  Got it red hot and touched 
> the silver solder to it. It melted for about 3/16 of an inch and quit 
> melting. I heated it up again and as it got red hot, it started to blow 
> out my other solder. It would just not stay hot to apply my solder long 
> enough. As soon as I got it red hot and started to apply the solder it 
> would cool off and not melt the solder. I tried the cutting tip to get it 
> hotter and that didn't work either. Actually started to melt the steel in 
> a couple spots, then quick started to apply the solder and same thing, 
> just 1/8 to 3/16 and it would cool off and not work. Then reheat and it 
> would melt the other solder out of the way and have to do it over again. I 
> messed around for about 4 hours and didn't get anywhere. I was not a happy 
> guy! After almost throwing the whole damn model in the scrap bin from 
> being so frustrated, I figured I'm not cut out for model making. After 
> sleeping on it for a day I took the welder and welded the crankshaft. I 
> did a little at a time so it didn't get too hot. Not sure if it will be 
> distorted or not, I didn't really care at that point. I did put it in the 
> main bearings after welding and it still turned over and didn't bind. So 
> that's my silver soldering failure story.
>
> Luke Tonneberger
> Rockford, Michigan
> USA
>
>
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