What a marvelous read here, thanks a lot for your input guys!
I have a slight concern regarding heating pad though, and it’s immerged from initial refusal of getting TherMedic pad (delivery troubles from amazon to my country, and necessity to get at least 2 just in case of poor QA on their side), and then turned into mistrust in cheap far infrared pads after I did small research.
Let me be clear: I’m just interested in finding the best possible source (sadly no US) of heat for tissues, and it was a long time since my last physics classes, so take it with a grain of salt.
So I started with trying to find far infrared pad on AliExpress. It’s was quite strange to see 2-4$ pads there, considering TherMedic being a Taiwan company and also using carbon fiber as a heating element. However I did use something like this https://aliexpr ess.ru/item/100 … .47174aa6yuBAJI when I just started PE last summer, and did see a major difference in elasticity while using it with extender. But the one I got was with fixed temperature, and wasn’t even listed as infrared, while being almost exactly the same.
Which made me research a bit more. Far infrared - Wikipedia
Quote: "Some heating pads are sold as providing "far infrared" therapy which purports to provide "deeper" penetration. Since the infrared radiation of an object is determined by its temperature, all heating pads provide the same infrared radiation if they are at the same temperature. Higher temperatures will provide greater infrared radiation but the user must be careful to avoid burns."
Next: What is the difference between thermal and infrared imaging? - Physics Stack Exchange
Quote: "The thermal radiation and the infrared radiation are the same thing if the sources of the radiation have temperatures comparable to the room temperature."
After that I tried to find if there are any papers on using far infrared heating pads. Found one, and the pad used there was actually FDA-registered medical device with data on it’s deep heating effect. But guess what - it costs 139$-259$. Not even close to 37$ right? And it’s made of carbon fiber too! Here is a promo of that pad, and name of paper at the bottom of the first page: https://www.the rmotex.com/wp-c … -Technology.pdf
So I returned to TherMedic site, noticed "patented" Cabric® technology, looked up that patent and found none. Only trademark in EU. Also I’m pretty much convinced that TotalMan is just the same, maybe just with more heat output.
Does it mean that all of these pads provide similar effect? And you can literally grab pads that being used for cloth heating? Or even make custom pad (or tube, for comfort) from carbon stripes that used for heated floor? Obviously there are differences between manufacturers, and there are plenty of carbon fabric types according to some papers I found.
Problem is without equipment you won’t be able to make sure that you actually use far infrared to heat your member. I really hope that I’m wrong and just overthinking, since there is a lot of unclear stuff for me. But for now I really have no idea how to approach to heating.
Anyway, for now I ordered a ton of various pads to experiment with, "far infrared" included. Will see if they actually be similar.