I built a PC for school but still have another desktop that my dad and I still plan to use, unfortunately there's no room for both and the one I built is bigger and won't fit in our desk anyways. It will have to go on the floor and under the desk there's a spot it can fit in but the room still has carpet and I know that's a big dust collector. He has a (stainless?) steel sign that is a good size to place the PC on, would there be any problems with this?