I've tried the "soldering iron"- smoking. Several times.
If you ask my taste buds, the result of the process is ashy, bland and not worth eating. Others might have different opinions. My taste buds scream "Just stay away from the soldering iron".
Cold smoking is a process that takes time. If you want to give it a try at you will need some sort of chamber to hang your meats/food, and a cold smoke generator of some sorts. There are thousands of ways to do this. Look into the venturi method, which is quite new in terms of cold smoking.
I use a cold smoke generator and a WSM as a chamber to make cold smoked food during late fall and early spring. The temps here at the time of year is about 45 degrees, which is quite ideal.
As I've said, with very thick and heavy smoke, you can make something worth eating during the time span of 6-12 hours, as long as you give the food a week or so to "mellow out". It's OK to freeze the food, it does not matter.
It would be easier to answer if you used temperatures rather than "cool" and "cold". "cold smoking" can be in a different temperature range where you live.