Bench Grinder Belt Sander

Bench grinder vs.Beltdisk sander ive found myself needing to grind steel a lot lately, but i cant keep turning the hand-held belt sander upside down and using it as a flat surface.Been looking into a little bench grinder or maybe a freestanding beltdisk sander.We have a little 3 bench grinder at work with an abrasive wheel on one side.