How to make a cooling coil.

         First you will have to decide between aluminum or brass. Its easier & lighter to use aluminum tubing to make coils. The only downfall to aluminum is it dents easily.

          Next you will need something that is smaller in diameter then the motor you are trying to cool. PVC pipe is good. Look around the house there are several good things to use. Vitamin bottles. Salt & pepper shaker. Just to name a few.

          Next, tape one end on the tubing shut. Then back to the kitchen and fill tube with salt. I make sure to tap the tubing down to pack the salt tight. When filled it to the top, tape off the open end.

          To start the coil, I hold a couple of inches in my left hand and against the PVC. With my right hand I start wrapping as tight as possible around the PVC. I always make more then I need. I can always use it next time or incase by the slim chance I get a kink in the tubing somewhere in the middle, there will have plenty extra.

         Finished product. Not perfect, but far cheaper then buying some of the $15 dollar kits out there. Notice the brass tubes on the right. Those are separate brush coolers. They are even better at cooling these motors.

Things to consider when putting the coil on a motor.

          First apply heat sink compound (Radio Shack part#276-1372) to the motor. Slide the coil over the motor. It should be snug. To tighten the whole thing up use a large piece of heat shrink.

          I leave out the heat sink compound (I probably shouldn't) because it makes a mess!