Question: How can I make a clamp?

  Options: 
 A. Screw one block at each end of a length of board that’s slightly shorter than the project to be clamped. Attach each block with just one screw so it will pivot for perfect alignment. Cut a couple of wedge-shaped pieces of wood and drive them between one of the blocks and the project.
 B. Screw one block at each end of a length of board that’s slightly longer than the project to be clamped. Attach each block with just one screw so it will pivot for perfect alignment. Cut a couple of wedge-shaped pieces of wood and drive them between one of the blocks and the project.
Answer: B