Step 1: Make the Blocks 1. Cut the 1" thick board into 1" wide strips. Further cut these strips into the 1" cubes necessary. A table saw and chop saw make creating the cubes much easier. It’s a good idea to make a few more cubes than necessary (just in case). 2. To form the "classic" Tetris block shape, sand off the corners of each of the cubes 1/8."