Brian Whatcott wrote in
:

If the casting is ornamental, there is no reason why an epoxy glueup
would not work for you.
But if the casting takes a knock, or sustains any load at all really,
you should be wary.

It takes no significant load, so I'm not too worried about that.

If the casting in question has fairly thick wallls - say 1/2 inch or
more - but not more than 1 inch thick at the break - and you don't
need to maintain an anodized colored surface, you should tote it to a
weld shop with aluminum MIG or TIG expertise.

It would be tedious to remove the one part, which is why I'm
hoping to be able to re-attach the broken part w/ some sort
of adhesive. My experience with welding castings (as opposed
to sheet/plate stock) is that the chance of success is highly
dependant on the skill of the welder, and welders who've worked
with castings aren't overly common. So if I was to remove both
parts, I'd probably go ahead & replace with new (even tho that's
a considerable cost).

I beleive I will try glueing it w/ the West System that's on
hand, and see how it goes.

Thanks to all who offered advice & suggestions.

John