Need help on welding a broken 150lb vise slide

[CharlesWaugh]

So today I got an American Scale Co. #78 vise for $275, just a touch under $2/lb so not too bad.
Especially since it has the swiveling jaw! Yipee!
It has 6" wide jaws in almost perfect shape.
No pipe jaws, but I'll put with that.
:-)

The rub is, the slide is broken as you can see.

My plan is as shown in the pics - to cut the break square, chamfer everything nicely and oxy/acetylene braze in the steel pieces with flux-covered brazing rod.

I'll MIG weld the two steel pieces together first, and drill them and the slide in two places (tapping the slide) so I can bolt it up before I go to braze, so nothing drifts or shifts.

Does this sound like a sound plan? Or does it look a bit dim?
:-)

From rooting around the web-O-tropolis, it seems that pre-heating a bunch helps, as does cooling it VERY slowly.

I'm really stoked to finally have a monster-killer swivel-jaw vise.

BTW: I love that the vise nut has 'VISE' cast into it.

Thanks!

The pic from the ad:


On the bench: