Ventilation System for IKEA Billy bookcase

thingiverse

I installed this ventilation system in my Billy bookcase to house my network gear without overheating it. A 5V fan was used so that it could be powered by a USB charger in the cabinet, allowing for easy placement anywhere. The fan speed is adjustable and constant, controlled by a PWM circuit that provides optimal airflow. The entire assembly prints on a 200mm*200mm printer diagonally, fitting snugly into place. The thermal performance was impressive, with the case temperature of my router in the top compartment dropping about 25F after installation. The blower/duct gap is sealed tightly using clear silicone, effectively blocking any air leaks. Alternative sealing options include tape for a quick fix. To achieve this ventilation system, I used a few specific components: a 5V 120mmx120mmx32mm blower that can be purchased on Amazon (https://smile.amazon.com/gp/product/B07PFNDYBZ/), and a motor speed controller also available on Amazon (https://smile.amazon.com/gp/product/B00RYKR83Q/). Additional materials include round head sheet metal screws or similar (39 pieces of 8x3/8"), M5 hex head cap screws and nuts for the adjustable feet (4 sets), and foam weatherstripping to seal up panel gaps when the door is closed.