How to make a Heating and Cooling Jacket

Step 11 Cooling System

Fan Cooling System

Materials:

·         4 computer fans, 5 volts each

·         1 model airplane battery, 15 volts

·         1 solid-state relay

·         8 mesh squares, sized to cover fans

·         8 stiff felt squares, slightly larger than mesh squares

·         4 flexible felt squares, same size as above

·         Velcro:

o   Enough sew-on fuzzy type to go around the circumference of four fan holes

o   Enough sticky loop type to cover four of the felt squares

·         Conductive Thread or wire

·         Strong normal sewing thread and needle

·         Gorilla glue (or other glue that will bond to felt, plastic, and grating)