if you dont have a 4 1/2" grinder, this is defenetly the time to get one, no welder should be without one. its a go to tool for many things, add a flap disk (sanding wheel) and its even better.
its also a good idea to get the wife used to knowing you will need to buy a new tool every time you do a project for her, this will pay off big time in the long run, its a clasic move for us maried guys.