I picked up a Sig Mid-Star 40 kit for cheap from a club member Monday night. Since I am in the process of building(bashing) a Kadet Sr and also have a Kougar sitting in the box at home, I thought I would start building the Mid-Star at work. Since the downsizing, there are plenty of desks available. But, as luck would have it, none of them are flat. I brought my 4' level to work with me this morning and checked them all. They all have a dip in the middle.

So my question is this: What can I get to put on the top of the desk (temporary of course) that will be flat, and will stay flat even with the desk dipping in the middle. I am thinking about some kind of wood sheet. I will put sheet rock on top of it. My local Home Depot has some half sheets of sheet rock for dirt cheap. I use a hollow core door in my shop at home, but that would be too long at the office.