I built a pressing station out of an old shelving unit by attaching a big piece of plywood and covering the top with batting and fabric stapled to it. It was great because I cut it down to be the perfect height for me and it has shelves to store all kinds of stuff up under it. It doesn't have casters but it has the little plastic cups like are on the bottom of deck furniture so it slides easily on the carpet in my sewing room. It is heavy enough that it doesn't move around when I'm ironing, but easy enough to pull away from the wall if I need to iron bigger stuff that hangs down the back. If you do use caster, I agree they need to be the kind that lock.