How to make a Heating and Cooling Jacket

Step 14 Sewing the Assembly into the Jacket

To the outside of the liner, you will now sew the two fans the blow air in on the chest and the two that blow air out of the jacket located on the lower back. This is the design of the circulation system that helps with the cooling process.

1.       First, place each fan where you want it to go. Be careful of the way it blows air and where the wiring leads are.

2.       With regular thread, sew one round between the felt and the liner all the way around the fan. Try to get as close to the glue as possible. Trim any excess felt that is hanging over the holes when you are done.

3.       Again, with regular thread, sew between the felt and the liner. For this round, sew as close to the edge of the felt as you can. This way there are two connections holding the fan down.