Once you have created two identical cubes, you can start the numbers. The most critical thing is that you put the proper numbers on the cubes. The order and orientation is not functionally critical, but you might want to think about a pleasing orientation. On one cube include the following numbers: 0, 1, 2, 3, 4, 5 and on the other cube include these: 0, 1, 2, 6, 7, 8. Note that '6' will serve as both 6 and 9. We printed some large numbers with a computer printer (use a bold and sans-serif font) and using clear tape positioned them on the cubes. Clamp one cube in a vise and with a sharp hobby knife, you can transfer the pattern to the wood; cut around the perimeter of the number and remove the paper; the shallow grooves created by the hobby knife will serve as your carving line. Alternatively you can use carbon paper to transfer the pattern, but we prefer using a knife because the groove creates a perfect place to start your carving cuts.

Next with a chisel or carving knife, carve out the numbers by creating a angled channel. You can also use a curved or angled gouge and create the channel. Note that the grain direction changes depending on which side of the cube you are carving. The endgrain will be the most challenging, but as long as your tools are sharp, you should be successful. It's best to practice this step on some scrap wood before you put your cubes under the knife.