First question: Razor Blades, Sandpaper, Razor Saw, Drill Bits, Sanding Block, Standard Hand Tools.

As for sanding a bevel, I start by laying the control surface flat on my bench. Lay a straight-sided pen on the bench as well. The ball-point of the pen should come close to the center of the hinge line, but you don't want it to be perfect - add a sheet of balsa under it if it is not close to center. It doesn't matter if the pen is higher or lower than the center, as long as it's close.

Now, keeping both the pen and the control surface flat against the bench top, draw a line on the face of the control surface.

Flip the control surface over onto its other side and repeat the process. This will give you two lines which are close to center.

Now bring the control surface to the edge of your bench, hold your sanding block at aproximately a 45 degree angle, and snad until you reach the top line.

Flip the control surface over and repeat.