Siver soldering bandsaw blade

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James wrote:
> One way my dad use to solder blades is prepare the ends of the blades
> with a tapered lap joint. Apply flux and a piece of flat silver
> solder, then using a set of soldering pliers that have been heated to
> red hot with an acetalen (sorry for spelling) torch, then gripping the
> band with the pliers.
>
> His pliers where about 18" long, (end to end). The heating end was 1/2"
> square iron stock.
>
> Should only take 30 secs or so to solder the joint.
>
> As for the black gunk, it sounds like you are getting contamination from
> your torch.
>
> Hope this helps. If needed, I could probably get a pic of the pliers.
> Just let me know.
>
> Just remove the dashes from my address
>
> James
>
>
>
> Ronald Murray wrote:
>
>> Hello
>> Not having great luck. I have some rolls of bandsaw blade stock. Any
>> hints
>> or tips greatly appreciated. Can flux go bad or get contaminated? It
>> seems
>> the solder melts but doesn't have that nice flow , but instead just
>> lumps up
>> into a nice cold solder joint. I cleaned the joints well , but when I
>> apply
>> the heat til it gets red hot I get this black gunk gathering at the
>> ends of
>> the blades. Is there a different flux for non ferrous & ferrous
>> metals? I've
>> silver soldered before with great success.Thanks.
>> ron
>>
>>

One way my dad use to solder blades is prepare the ends of the blades
with a tapered lap joint. Apply flux and a piece of flat silver
solder, then using a set of soldering pliers that have been heated to
red hot with an acetalen (sorry for spelling) torch, then gripping the
band with the pliers.

His pliers where about 18" long, (end to end). The heating end was 1/2"
square iron stock.

Should only take 30 secs or so to solder the joint.

As for the black gunk, it sounds like you are getting contamination from
your torch.

Hope this helps. If needed, I could probably get a pic of the pliers.
Just let me know.

Just remove the dashes from my address

James



Ronald Murray wrote:
> Hello
> Not having great luck. I have some rolls of bandsaw blade stock. Any hints
> or tips greatly appreciated. Can flux go bad or get contaminated? It seems
> the solder melts but doesn't have that nice flow , but instead just lumps up
> into a nice cold solder joint. I cleaned the joints well , but when I apply
> the heat til it gets red hot I get this black gunk gathering at the ends of
> the blades. Is there a different flux for non ferrous & ferrous metals? I've
> silver soldered before with great success.Thanks.
> ron
>
>

In article <[email protected]>,
"Ronald Murray" <[email protected]> wrote:

> Not having great luck. I have some rolls of bandsaw blade stock. Any hints
> or tips greatly appreciated. Can flux go bad or get contaminated? It seems
> the solder melts but doesn't have that nice flow , but instead just lumps up
> into a nice cold solder joint. I cleaned the joints well , but when I apply
> the heat til it gets red hot I get this black gunk gathering at the ends of
> the blades. Is there a different flux for non ferrous & ferrous metals? I've
> silver soldered before with great success.Thanks.

I believe flux can go bad. I've not soldered B/S blades, but this past
winter I was intalling a new bath & shower control valve. The flux I had
on hand caused the solder to behave exactly as you described. I bought a
new container and the soldering went smoothly and flowed just as you
would expect.

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