>>1957650More or less. The amount of heat depends on the length of rope and voltage. The place I got it from has datasheets to give you an idea of how hot various lengths are. Too short and it can get dangerously hot, too long and it won't be warm enough. In the case of the heat pads there are 2 parallel lengths to double the area / power draw but maintain the desired heat output. You can only go so far with that before you reach the maximum current draw of the power source. With the right length you can plug it straight into a battery without the danger of it getting too hot. I use PWM LED dimmers to control the temperature, it cycles the power on / off quickly between 0 and 99%.
The trickiest part was getting wires attached to the carbon fiber. Using copper crimps is the only reliable solution I've found. I tried several other ways but they all ended up failing in one way or another. It's probably best to use a copper crimp and not solder it. Solder makes the wires stiff and more likely to break over time.
In addition to carbon rope I also have some carbon tape. I'm going to try this technique with copper tape to make new heating pads.
https://www.youtube.com/watch?v=9LnAwo1BGus 