I'd like to weld a discbrake rotor to the top of a a mild steel post to mount a machinist vise to. So far internet searches have turned up a lot of pre/post heating for cast iron welding. I don't have the facilities for that. I did a bit of it in school no problem but that was cast to itself not mild steel.
Is this a bad enough idea that I should figure out how to mount it with bolts? Or would a braze hold well enough to hold the twisting and turning on the vise?