After reading this thread, I pumped with no heat last night. I had essentially no edema after 35 min, maybe packed the tube a little less. I definitely was not as full when I came out of the tube. I’m almost 7” in the tube at 5 mmHg and only pack to around 3” in a 1.75” cylinder. I’m sure if I went longer, it might pack a little more. However, I was about 1/10” shorter without heat. Heating and using the rice sock is a pain, but there was a noticeable difference not using it.
Wespe