I'm trying to build a liquid cooled vest. I already have a USB powered pond pump that circulates water, and will fit standard aquarium airline tubing. However said tubing is pretty thick walled for the purpose I intend.I'm looking for tubing of the same interior diameter, but with thinner walls, so it does a better job of absorbing and radiating heat from the fluid it will carry. Any suggestions? via /r/DIY https://ift.tt/2uPfEDS
