[TheForge] Re: Welding cast iron

[IowaHarry]

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
>
>