[TheForge] Re: Welding cast iron

[Ron Childers]

You could cast a brass nut

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Peter Fels & Phoebe
Palmer
Sent: Monday, May 19, 2008 6:52 PM
To: Blacksmithing List Sponsored by ABANA
Subject: Re: [TheForge] Re: Welding cast iron

Hi Harry;
You are the same sort of sucker i am..putting more dollars into 
repairing a POS than a good,new one would have cost in the first place.
It's one of my areas of expertese.
Having  braised, too late to arc with Ni rod.
The faces to be  braised need to be ground to bright metal, degreased, 
then ( using cast iron braising flux) and pre-wet ( buttered) with 
braising rod. Jig them in place and do the fusing passes. cool slowly.
Then apply the " look honey, "I gotta buy an adult vise....it's a POS....pf

IowaHarry wrote:
> Hi Mike,
> 
>    The nut is, as you said, the female threaded part the vise bolt pulls 
> on. On this vise It was a casting that is rather "L" shaped with a bolt 
> to hold it in place going into the base. There is also a nubbin in the 
> base casting that the "L" would be up against on the side of the pull so 
> not all of the load would be on the bolt. Yes, buying a new vise may be 
> what I do but I still intend to fix this one. That will probably be the 
> line I use with SWMBO. "Look honey, it's broke, I gotta buy a new one".
> 
> Harry
> 
> Mike Spencer wrote:
>> IowaHarry wrote:
>>
>>  
>>> ...broken the vise nut in my chinese vise shaped object (bench vise).
>>> [snip]
>>> The crack was on the diagonal behind the nut proper so we cut the
>>> nut away from the base completely and made a black steel base to
>>> braze to.
>>>     
>>
>> Is the nut -- the female threaded part -- integral with the body of
>> the vise?
>>
>> I forget just exactly how my bench vise is, but IIRC, the nut floats.
>> That is, it's a separate part and is held to the base loosely with a
>> pin or bolt or the like.  If the nut is actually part of the base
>> casting, a sort of mushroom affair that sticks up into the axial line
>> of the screw inside the movable jaw, that sounds like a really weak
>> design. And if you reattached it with a braze and didn't get perfect
>> alignment, that would subject it to even more stress.
>>
>> If that's the case, you might look first at a higher quality, old
>> bench vise to see how it's made and then try building some kind of
>> affair that would float the nut.
>>
>> Or maybe I don't understand just what your arrangement is.
>>
>>
>> - Mike
>>
>>   
> 
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