Measure the inside of the drawer. You want the box to fits snugly inside of it. Here's how to do this using minimal math. To make sure the sides of the box are exactly the same length, cut one board, then use it to mark the cutting line for the second board (picture one). Then place both boards inside the length of the drawer and measure the width (picture two). This is the length needed for the second set of boards.
Step Two: Assemble the box.
Use wood glue to bond the corners together, making sure that the long pieces of wood are on the lenght of the box, and the short pieces form the width. Finish the corners with nails for added sturdiness (picture three).
Make sure the finished box (picture four) fits inside the drawer before proceeding (picture five.)
Step Three: Cut the diagonal inserts.
Decide where the inserts will be placed in the box. Mark the lengths on the board (picture six). Using a miter saw, cut the board at a 45 degree angle. Make sure that the cuts form a trapezoid (picture seven).
Again, if your board are the same length, you can measure second board against the first (picture eight)
In our drawer insert, Jonathan made one section larger than the other to accommodate my unwieldy wooden spoon collection. In this case, not all of the insets are the same length (picture nine).
Step Four: Attach the diagonal inserts to the box.
Using a clamp (or a friend), hold the inserts in place while you attach them to the box using finishing nails (picture ten). Especially if your box fits flush with the edge of the drawer, drive the nails as deeply into the wood as possible, because they will add to the overall width of the box (picture eleven). This will also keep the inside of the drawer from being scratched.
And there you have it! The perfect home for large utensils at the perfect price. I asked Jonathan if he was going to finish the wood. He said I could take apart the newly installed childproof drawer lock and do it myself. Unfinished it is...