This nice cot bed from Ikea is a best value for money bargain. But during the use, it proved to be very poor in ventilation of the mattress. So this is the way to improve the float of air through it.
Step 1: The Tools
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.