Airbrush Compressor cooling fan

thingiverse

This is a mount and switch block designed to keep the head of an airbrush compressor cool. It uses a fan salvaged from an old computer powered by a 12-volt DC "wall wart" transformer, which can be found at any hardware store. The switch is also generic in type. The cooler head will effectively prevent water from condensing inside the line and possibly extend the life of your compressor, especially for cheap eBay compressors. I printed this on my Makerbot Mini using 3 shells with a 50% fill rate. A screw goes down through the top next to the switch and secures the bottom wire cover (as seen in an upside-down photo). The head of the screw is epoxied in place, and the "FAN" plate is glued on top to hide it. One photo shows the switch mounted with the screw sticking out, while another photo displays the inside of the wire cover showing a view of the wire strain relief arrangement. The power wire goes through the notch on the end of the wire cover, and the fan wires enter through the side notch. This design allows for easy attachment and detachment from the compressor, as demonstrated in the video. The tabs that fit into the compressor fins are made a bit thick to accommodate many compressor models, but you will need to file or sand them to fit your model. They should sit snug between the head fins without being wedged tight.