Tools you need: - Power drill - circular tube drill - paper carton - marker - ruler
Step 2: Mark The Points
Make a stencil with the cardboard measuring by the ruler and dividing to have six holes equally distanced each from the other. This way you will have a professional result and not a randomly drilled panel. Also will make your task quicker.
Step 3: Start Drilling
Where you marked the points start drilling. First drill from the opposite side for a few millimeters without going all the way through. Then turn the other side and drill through. This way you will have a cleaner edged hole.
Step 4: Clean Up The Mess
Once you are done with drilling you have to clean the mess. Don't forget to wipe the saw dust from the board.
Step 5: Final Result
As you can understand it is a very easy job but this is a big improvement to the ventilation of the mattress and better health of your child.